Scientific American, Volume XXIV., No. 12, March 18, 1871 / A Weekly Journal of Practical Information, Art, Science, / Mechanics, Chemistry, and Manufactures.

Scientific  American, Volume XXIV., No. 12,  March 18, 1871 / A Weekly Journal of Practical Information, Art, Science, / Mechanics, Chemistry, and Manufactures.
Author: Various
Pages: 261,366 Pages
Audio Length: 3 hr 37 min
Languages: en

Summary

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SMITH'S INFANT DINING CHAIR.

The accompanying engraving illustrates a convenient and cheap infant dining chair, which can be attached to any of the ordinary chairs in common use.

It consists of a chair without legs, suspended by the posts of the back, as shown, on pins engaging with hooked bars, which are placed upon the back of an ordinary chair.The details of the device will be seen by a glance at the engraving.The chair is adjusted in hight by placing the pins in the proper holes in the posts made for this purpose.

For further information, address Smith, Hollenbeck & Co., Toledo, Ohio.


The Medicines of the Ancients.

At the recent commencement of the Homeopathic College in this city, Mr. S. H. Wales, of the Scientific American addressed the graduating class, and from his remarks, we quote the following:

"Many writers of our time persist in regarding this, above all others, as the best period in the history of our race; and, doubtless, it is true in many important respects.But I cannot forbear the suggestion at this moment that there was a time in the history of the world when the science of medicine was unknown, when people lived to the incredible age of many centuries; and, even after the span of life had been reduced to threescore and ten, sickness was comparatively unknown.In ancient times, it was looked upon as a calamity, that had overtaken a tribe or people, when one of its members prematurely sickened and died.

"Other arts and sciences flourished in Rome long before medicine was thought of; and the historian tells us that the first doctor who settled in Rome, some two hundred years before Christ, was banished on account of his poor success and the very severe treatment applied to his patients; and it was a hundred years before the next one came.He rose to great popularity, simply because he allowed his patients to drink all the wine they wanted, and to eat their favorite dishes.Some writer on hygiene has made the statement that the whole code of medical ethics presented by Moses consisted simply in bathing, purification, and diet.This simplicity of life was not confined to the wandering tribes who settled in the land of Canaan, but was the universal custom of all nations of which history gives us any account.This simple arrangement for health was considered enough in those primitive times, when the human system had not been worn out and exhausted by depletive medicines.The luxuries of public baths, athletic sports and games were deemed ample, both to educate the physical perceptions and to prevent disease.

"All this wisdom, which had its origin in ancient games and sports of the field, led to the erection of extensive bath-houses, and the adoption of other healthful luxuries to which all the people could resort to recreate their wasted powers."

BARNES' VENTILATOR FOR MATTRESSES, ETC.

Many diseases are caused by the use of beds not properly aired; and it is difficult, if not impossible, to properly air, or ventilate, a mattress, made in the usual manner.If this could be done more thoroughly than it generally is, much sickness would be avoided.

To secure this object cheaply and efficiently is the design of the invention herewith illustrated.By it a complete circulation of air through the mattress is secured, which carries off all dampness arising from constant use.Thus the mattress becomes more healthy for sleeping purposes, more durable and better fitted for the sick room.The ventilators consist of coiled wire, covered with coarse cloth (to prevent the stuffing closing up the tube), running through the mattress in all directions.The ends of the coils are secured to the ticking by means of metal thimbles, inside of which are pieces of wire gauze, to prevent insects getting in, but which admit air freely.The cost of the ventilators is small, and they will last as long as any mattress.They can be applied to any bed at small expense.

This invention was patented through the Scientific American Patent Agency, January 10, 1871.The right to manufacture will be disposed of in any part of the country.Further information can be obtained by addressing the proprietors, Barnes & Allen, Hoosick Falls, N.Y.

The third annual exhibition of the National Photographic Association takes place at Horticultural Hall, Philadelphia, June 6, 1871. Prof. Morton is to deliver two lectures on Light.

A SCIENTIFIC AND TECHNICAL AWAKENING.

Our English cotemporary, Engineering, appears to have seriously exercised itself in the perusal of our good-natured article on "English and American Scientific and Mechanical Engineering Journalism," which appeared in the Scientific American, February 4th; at least, we so judge from the tenor of an article in response thereto, covering a full page of that journal. The article in question is a curiosity in literature. It deserves a much wider circulation than Engineering can give it, and we would gladly transfer it to our columns, but for its exceeding length—a serious fault generally, not only with Engineering's articles, but most other technical journals published in England. It would scarcely do for them to be brief in their discussions, and above all other things, spice and piquancy must always be excluded. Engineering evidently labors under the conviction that the heavier it can make its discussions, the more profoundly will it be able to impress its readers. Hence, we are equally astonished and gratified to find a gleam of humor flashing out from the ordinary sober-sided composition of our learned contemporary. The article came to us just as we were laboring under an attack of dyspepsia, and its reading fairly shook our atrabilious corpus. We said to ourselves, "can it be possible that Engineering is about to experience the new birth, to undergo regeneration, and a baptism of fire?" The article is really worth reading, and we begin to indulge the hope that at least one English technical is going to try to make itself not only useful, but readable and interesting. And what is most perplexingly novel in this new manifestation, is the display of a considerable amount of egotism, which we had always supposed to be a sinful and naughty thing in technical journalism. And, as if to magnify this self-complaisance, it actually alludes to its "own extensive and ever-increasing circulation in America." Now to show how small a thing can impart comfort to the soul of our cotemporary, we venture to say that the circulation of Engineering in this country cannot much exceed three hundred copies per week.

It evidently amazes our English cotemporary that a journal like the Scientific American, which, according to its own notions, is chiefly the work of "scissors and paste," should circulate so widely; and it even belittles our weekly circulation by several thousand copies, in order to give point to its very amusing, and, we will also add, generally just criticism.

The writer in Engineering, whoever he may be, appears to be a sort of literary Rip Van Winkle, just waking out of a long sleep; and he cannot get the idea through his head that it is possible that a technical journal can become a vehicle of popular information to the mass of mankind, instead of being the organ of a small clique of professional engineers or wealthy manufacturers, such as seems to hold control of the columns of Engineering, and who use it either to ventilate their own pet schemes and theories, or to advertise, by illustration and otherwise, in the reading columns, a repetition of lathes, axle-boxes brakes, cars, and other trade specialities, which can lay little or no claim to novelty. It is, furthermore, a crying sin in the estimation of our English critic that American technical journals do not separate their advertisements from the subject matter; and he thinks that when Yankee editors learn that trade announcements are out of place in the body of a journal, they will see how to make their journals pay by making them higher priced. Now we venture to say, without intending to give offence, that Yankee editors understand their business quite as well as do English editors; and it is presumable, at least, that they know what suits their readers on this side, much better than do English editors. We venture to suggest—modestly, of course—that journalism in the two countries is not the same, and should the editor of Engineering undertake to transfer his system of intellectual labor to this side of the Atlantic, he would not be long in making the discovery that those wandering Bohemian engineers, who, he tells us, are in sorrow and heaviness over the short-comings of American technical journals, would turn out after all to be slender props for him to lean upon. We think it probable, however, that with a little more snap, a journal like Engineering might possibly attain a circulation, in this country, of 500 or 1000 copies weekly.

Why, American engineers have scarcely yet been able to organize themselves into an association for mutual advancement in their profession, much less to give the reading public the benefit of their experience and labors! This fact alone ought, of itself, to satisfy Engineering that no such journal could profitably exist in this country. Whenever our American engineers are ready to support such a journal, there will be no difficulty in finding a publisher.

Engineering, in its casual reference to the various technical journals of America, omits to name our leading scientific monthly, but introduces with just commendation a venerable cotemporary, now upwards of three score years of age. Now, it is no disparagement of this really modest monthly to say, that perhaps there are not sixty hundred people in the States who know it, even by name; and so far as the use of "scissors and paste" are made available in our technical journals, we venture the assertion that the editorial staff expenses of the Scientific American are as great, if not greater, than those of Engineering. The question, however, is not so much one of original outlay, but which of the two journals gives most for the money. In this very essential particular, and with no intention to depreciate the value of Engineering, we assert, with becoming modesty, that the Scientific American occupies a position which Engineering will never be able to attain.

THE SHERMAN PROCESS.


When people boast of extraordinary successes in processes the details of which are kept profoundly hidden from public scrutiny, and when the evidences of success are presented in the doubtful form of specimens which the public has no means of tracing directly to the process, the public is apt to be skeptical, and to express skepticism often in not very complimentary terms.

For a considerable time, the public has been treated to highly-colored accounts of a wonderful metallurgic process whereby the best iron and steel were said to be made, from the very worst materials, almost in the twinkling of an eye.This process has been called after its assumed inventor, or discoverer, the "Sherman Process."The details of the process are still withheld, but we last week gave an extract from an English contemporary, which throws a little light upon the subject.

The agent relied upon to effect the remarkable transformation claimed, is iodine, used preferably in the form of iodide of potassium, and very little of it is said to produce a most marvellous change in the character of the metal.

A very feeble attempt at explaining the rationale of this effect has been made, in one or two English journals, which we opine will not prove very satisfactory to chemists and scientific metallurgists. The Engineer has published two three-column articles upon the subject, the first containing very little information, and the second a great number of unnecessary paragraphs, but which gives the proportion of the iodide used, in the extremely scientific and accurate formula expressed in the terms "a small quantity."

Assertions of remarkable success have also been given.Nothing, however, was said of remarkable failures, of which there have doubtless been some.A series of continued successes would, we should think, by this time, have sufficed for the parturition of this metallurgic process, and the discovery would ere this have been introduced to the world, had there not been some drawbacks.

We are not prepared to deny in toto that the process is all that is claimed for it; but the way in which it has been managed is certainly one not likely to encourage faith in it.

The very name of "process" implies a system perfected, and if it be still so far back in the experimental stage that nothing definite in the way of results can be relied upon, it is not yet a process.If, in the use of iodine, in some instances, fine grades of iron or steel are produced, and in as many other experiments, with the same material, failures result, it is just as fair to attribute the failures to the iodine, as the successes.A process worthy the name is one that acts with approximate uniformity, and when, in its use, results vary widely from what is usual, the variation may be traced to important differences in the conditions of its application.

On the whole, we are inclined to believe Mr. Sherman's experiments have not yet developed a definite process, and we shall receive with much allowance the glowing statements published in regard to it, until such time as it can face the world and defy unbelief.

The patents obtained by Mr. Sherman seem to cover the use of iodine, rather than the manner of using it, and throw no light upon the rationale of the process.

A patent was granted by the United States Patent Office, Sept. 13, 1870, to J. C. Atwood, in which the inventor claims the use of iodide of potassium in connection with the carbons and fluxes used in making and refining iron. In his specification he states that he uses about fifteen grains of this salt to eighty pounds of the metal. This is about 1373 of one per cent. He uses in connection with this exceedingly small proportion of iodide of potassium, about two ounces of lampblack, or charcoal, and four ounces of manganese, and asserts that steel made with these materials will be superior in quality to that made by the old method. These claims we are inclined to discredit. Certainly, we see no chemical reason why this small amount of iodide should produce such an effect, and the specification itself throws no light upon our darkness.

If the experiments in these so-called processes have no better basis than is apparent from such information as at present can be gathered respecting them, it is probable we shall wait some time before the promised revolution in iron and steel manufacture is accomplished through their use.

RUBBER TIRES FOR TRACTION ENGINES.


When it was first discovered that a smooth-faced driving wheel, running on a smooth-faced rail, would "bite," the era of iron railways and locomotive engines may be said to have fairly commenced.The correction of a single radical error was, in this case, the dawn of a new system of travel, so extensive in its growth and marvelous in its results, that even the wildest dreamer could not, at that time, have imagined the consequences of so simple a discovery.

A popular and somewhat similar error regarding the bite of wheels on rough and uneven surfaces, has also prevailed.We say popular error, because engineers have not shared it, and it has obtained, to any notable extent, only among those unfamiliar with mechanical science.The error in question is, that hard-surfaced wheels will not bite on a moderately rough surface, sufficiently to give an efficient tractile power.It seems strange that this error should have diffused itself very extensively, when it is remembered that a certain degree of roughness is essential to frictional resistance.The smoothness of the ordinary railway track is roughness compared to that of an oiled or unctuous metallic surface; and it has been amply demonstrated that the resistance of friction, of two bearing surfaces depends, not upon their extent, but upon the pressure with which they are forced together.A traction wheel, of given weight, resting upon two square inches of hard earth or rock, would develop the same tractile power as though it had a bearing surface of two square feet of similar material.

On very rough and stony ways, however, another element practically of no importance on moderately rough ways, like a macadam surface or a concrete road, where the prominences are nearly of uniform hight, and so near together as to admit between their summits only very small arcs of the circumference of the wheel; comes into action.This element is the constantly recurring lifting of the superincumbent weight of the machine.Even this would not result in loss of power, could the power developed in falling be wholly applied to useful work in the direction of the advance of the engine.The fact is, however, that it is not so applied, and in any method of propulsion at present known to engineering science, cannot be so applied.Above a certain point where friction enough is developed to prevent slip, the more uneven the road surface is, the greater the power demanded for the propulsion of the locomotive.And this will hold good for both hard and soft-tired wheels.

What then is the advantage, if any, of rubber-tired wheels?The advantages claimed may be enumerated as follows: increased tractile power, with a given weight, secured without damage to roadways; ease of carriage to the supported machinery, whereby it—the machinery—is saved from stress and wear; and economy of the power, expended in moving the extra weight required by rigid-tired wheels, to secure the required frictional resistance.The last-mentioned claim depends upon the first, and must stand or fall with it.The saving of roadway, ease of carriage, and its favorable result upon the machinery, are generally conceded.

A denial of the first claim has been made, by those interested in the manufacture of rigid-tired traction engines and others, in so far as the rubber tires are employed on comparatively smooth surfaces; although the increased tractile power on quite rough pavements and roads is acknowledged.

This denial is based upon results of experiments performed on the streets of Rochester, England, between the 9th October and the 2nd November, 1870, by a committee of the Royal Engineers (British Army), with a view to determine accurately the point in question.

Care was taken to make the circumstances, under which the trials took place, exactly alike for both the rubber and the iron tires.The experiments were performed with an Aveling and Porter six-horse power road engine, built in the Royal Engineers' establishment.The weight of the engine, without rubber tires, was 11,225 pounds; with rubber tires, it weighed 12,025 pounds.Without rubber tires it drew 2.813 times its own weight up a gradient of 1 in [missing]; with rubber tires, it drew up the same incline 2.763 times the weight of engine, with the weight of rubber tires added; showing that, although it drew a little over 2,200 pounds more than it could do without the rubber tires, the increase of traction was only that which might be expected from the additional weight.

It is claimed, moreover, that the additional traction power and superior ease of carriage on rough roads, secured with rubber tires, is dearly bought at the very great increase in cost, of an engine fitted with them, over one not so fitted.

This is a point we regard as not fully settled, though it will not long remain in doubt.There are enough of both types of wheels now in use to soon answer practically any question there may be of durability (upon which the point of economy hinges), so far as the interest on the increased cost due to rubber tires, is offset against the greater wear and tear of iron rimmed wheels.It is stated, on good authority that a rubber tired engine, started at work in Aberdeen, Scotland, wore out its tires between April and September, inclusive, and when it is taken into consideration, that the cost of these tires is about half that of other engines, made with solid iron rimmed driving wheels, it will be seen that, unless very much greater durability than this can be shown for the rubber, the advantages of such tires are very nearly, if not more than, balanced by their disadvantages.

The fact that one set of tires wore out so soon does not prove a rule.There may have been causes at work which do not affect such tires generally, and it would be, we think, quite premature to form favorable or unfavorable judgment, of relative economy from such data as have been yet furnished.

The difference in the current expenses of running the two most prominent types of engines, with hard and soft tires, now in use, does not affect the question of rubber tires, unless it can be shown that these tires necessitate, per se, such a form of engine as requires a greater consumption of fuel, and greater cost of attendance, to perform a given amount of work.

CENTRAL SHAFT OF THE HOOSAC TUNNEL.


As many of our readers have evinced much interest and ingenuity on the question of the propriety of placing reliance upon the accuracy of dropping a perpendicular from the top to the bottom of a shaft 1,030 feet in depth, by means of an ordinary plummet, we take the earliest opportunity of settling the matter beyond dispute, by reporting the results lately obtained, through a series of experiments by the engineers in charge, for the ultimate purpose of laying down the correct line for the tunnel.

The perpendicular line has, of course, been dropped many times, and the main result taken.The plummet used is made of steel, properly balanced and polished, in shape something like a pineapple, and of about the same size, weighing fifteen pounds.It was suspended, with the large end downwards, by a thin copper wire, one fortieth of an inch in diameter, immersed in water; and, after careful steadying with the hand, occupied about an hour in assuming its final position or motion, which, contrary to the expectation and theories of many, resulted in a circular motion around a fixed point, the diameter of the circle being a mean of one quarter of an inch.The suspending wire in these operations was not quite the entire length of the shaft, being only 900 feet; and before the plummet had settled, the wire had stretched nearly twenty feet.

The suspension of the plummet in water was not considered necessary for any other reason than that water was continually trickling down the wire, and dropping on the plummet.The experiments so far have not been of the perfect character it is determined to attain, when the final alignment is made, as, until the headings east and west of the shaft have advanced to a considerable distance, any slight error would be of no account.

A neat and ingenious instrument has been constructed for determining the variation of the plummet, and will be used when great accuracy is desired; the plummet will also be suspended in oil.

The bearing of the tunnel is about S.81° E.; but, independently of its near approach to the line of revolution described by the earth, it is not considered necessary to take into account any motion it may derive from this cause.In fact, the opinion is, that the motion of the earth will not practically have any effect.

On the whole, after the still imperfect experiments which have been made, enough is established to show there is no difficulty to be encountered, other than the accurate and delicate manipulation of the plummet and its attachments.

The shaft headings are progressing favorably.The rock is not so hard or varied as that met with at the west end markings.Already nearly 300 feet have been taken out, and with the proved energy of the contractors, this great task will doubtless be prosecuted steadily and surely to completion, within the contract time expiring March 1, 1874.

A MUSEUM OF ART AND NATURAL HISTORY.


Our recent articles on "Scientific Destitution in New York" and "The Scientific Value of the Central Park," have called forth numerous letters from correspondents, and have been extensively noticed by the press.We now learn that the legislature of the State has taken the matter in hand, and there is some prospect, with an honest administration of the appropriations, of something being done to relieve our city of the opprobrium that rests upon it.A bill is pending, before the Senate, authorizing the Park Commissioners to build, equip, and furnish, on Manhattan Square, or any other public square or park, suitable fire-proof buildings, at a cost not exceeding $500,000 for each corporation, for the purpose of establishing a museum of art, by the Metropolitan Museum of Art, and of a museum of natural history, by the American Museum of Natural History, two societies recently incorporated by the Legislature.This is a million dollars to begin with, and an ample site, without cost, to the aforementioned corporations.

Manhattan Square extends from Seventy-seventh to Eighty-first streets, and from Eighth to Ninth avenues, and spans about eighteen acres.Until it was set apart by the state Board of Commissioners, for the purposes of a Zoological Garden, it was proposed, by a number of enlightened citizens of New York, to devote it to the uses of four of our existing corporations, giving to each one a corner, and an equal share in the allotment of space.The societies were, "the Academy of Design," for art, "the Historical Society," for public records and libraries, "the Lyceum of Natural History," for science, and "the American Institute," for technology.These have been incorporated for many years, and are known to include the leading artists, men of letters, science, and the arts, of the city, on their lists of members.The committee went so far as to have plans of the building drawn by competent architects; but, like many other well-meant schemes, want of money compelled the originators of the plan to abandon any further attempts.In the meantime, the Legislature chartered the American Botanical and Zoological Society, and gave the Commissioners of the Park authority to set apart a portion of it, not exceeding sixty acres, for the use of the Society, for the establishment of a zoological and botanical garden.This society was duly organized under the act, and Mr. Hamilton Fish was made its president, and considerable sums of money were subscribed.But, according to the sixth annual report of the Board of Commissioners, "the society never manifested its desire for an allotment of ground."It appears to have died, and made no sign.Some of our citizens, fearing that the Central Park would go the way of every other public work in the city, made strenuous effort to revive the Zoological Society, for the purpose of obtaining a perpetual lease of a suitable site, on which to establish a zoological garden, similar to those in London, Paris, Amsterdam, and Cologne.Their object was to remove this part of the Park beyond the reach of political intrigue.Subsequent events have shown that the fears of these gentlemen were well founded.The Legislature of the State, on the 25th of March, 1862, gave ample powers to the New York Historical Society to establish a Museum of Antiquity and Science, and a Gallery of Art, in the Central Park.They have submitted designs for a building, but, for some reason, no decisive steps have been taken towards its construction.

The Lyceum of Natural History was also negotiating with the Commissioners, for the use of the upper rooms of the arsenal for its collections, and there is no doubt that an arrangement to this effect would have been made, if a fire had not destroyed the entire collections of the Lyceum.The Lyceum made great effort to raise money to purchase a new collection, but without avail; and, although this is the oldest scientific society in New York, and has inrolled in its list of members, nearly every professional scientist of the city, it is probably the poorest, in income and resources, of any academy of sciences in the world.We do not know that the Academy of Design has ever applied for a home in the Central Park; and we cannot speak for the American Institute, nor for the Geographical Society, in this particular.As we stated in our former article, the old Board of Commissioners appears to have become weary of the unsuccessful attempts on the part of numerous societies to divide up and apportion the Central Park, and they applied to the Legislature for authority to conduct matters in their own way.An act was duly passed, authorizing the Board "to erect, establish, conduct, and maintain, on the Central Park, a Meteorological and Astronomical Observatory, a Museum of Natural History, and a Gallery of Art, and the buildings therefor, and to provide the necessary instruments, furniture, and equipments for the same."

Here would seem to be ample power for the establishment of museums of science and art, but nothing is said about the manner of raising the money.One would suppose, however, that, by means of the "Central Park Improvement Fund," abundant means could have been raised.The bill now before the Legislature puts matters in a new light.If it does not conflict with previous enactments, nor destroy vested rights, it has the appearance of being a thoroughly practical way of solving the question of art and science for the city.The Metropolitan Museum of Art and the American Museum of Natural History are in the hands of the most respectable citizens of New York.It would not be possible to find a body of men of more unimpeachable integrity and greater worth, than the gentlemen who have founded these two societies.It is impossible that they should lend their names to anything that will not bear the closest scrutiny; hence the proposition, now before the Legislature, to put up buildings for them, at a cost of a million dollars, must attract unusual attention.If the State would appropriate the money to these corporations, giving them the control of its expenditure, we should have considerably more confidence in its honest administration than, we are grieved to say, we can feel under the present circumstances; and if we knew what other institutions are to have the remaining portions of Manhattan Square, it would be a great relief to our minds.

"We fear the Greeks bringing gifts," but are willing to accept the gifts, if the officers of the two organizations are certain that it is all right.

The need of a Museum of Natural History, and of a Gallery of Art, in New York, is so pressing that there is some danger of our accepting the appropriations without a proper regard to consequences.The Court House is not yet finished, and the foundations of the Post-office are scarcely laid.

REPORT OF THE JUDGES OF GROUP 1, DEPARTMENT V.OF THE EXHIBITION OF THE AMERICAN INSTITUTE FOR 1870.THE ALLEN ENGINE.


The labors of the judges in this department were much lighter in the last exhibition than in the preceding one, and we are happy to say, were, in our opinion, so far as the award of premiums is concerned, much more fairly performed.The award of two first premiums to two competing engines could scarcely be repeated this time, as there was in reality no competition.The Allen engine was the only important one entered, and of course received the first premium.The engine is, however, one that evidently could have competed favorably with those previously exhibited.

We are in receipt of advanced sheets of the judges' report pertaining to the critical examination of this engine, being a record and account of experiments performed under the supervision of Washington Lee, C.E.The experiments were very comprehensive, and comprised approved tests, of each important detail, usually made by expert engineers.

The report is too voluminous for reprint or even for condensation in our columns.In looking it through, we are satisfied that the experiments were accurately made, and that the engine exhibited great working efficiency and economy.

As the engine has been recently illustrated and described in our columns, we deem it unnecessary to dwell upon the details of its construction.The water test of the previous exhibition was employed, the water being this time measured, with indisputable accuracy, in a tank, instead of by a meter as before.

The voluminous comparison of this engine with those previously exhibited, seems unnecessary, and we think not in good taste in such a report, however much it may possess of scientific interest.Moreover, the circumstances under which the trials were respectively performed, render the comparison difficult, if not unfair.

Mr. Lee concludes his report with a thorough endorsement of the theory of Mr. Porter upon the action of the reciprocating parts of engines, as set forth by the last named gentleman in recent articles in this journal.He says:

"Under the resistance of 128.375 horse powers at the brake, the motion of the engine was remarkably uniform; not the least diminution of speed in passing the centers could be detected, illustrating very satisfactorily the value, in this respect, of the speed employed, and of the action of the reciprocating parts of the engine in equalizing the rotative pressure on the crank through the stroke.The governor was, during the trials and through the exhibition, nearly motionless, while the load remained constant, and instantaneous in its action on changes of resistance, maintaining a steadiness of running which left nothing to be desired."

The judges—Prof. F.A.P.Barnard, Thos.J.Sloan, and Robert Weir—speak in their report as follows:

"The performance of this engine has exceeded that of the two fine engines which were on trial here last year.The results seem to be without precedent in such engines.The engine ran from 11 to 12 hours repeatedly without showing a sign of a warm bearing, displaying thorough perfection in all its parts.In all respects the engine is first-class, and from the fact of its presenting weight with speed, as a requisite for perfection in steam engines, it has opened a new era in this necessary branch—its economy having been clearly demonstrated in the careful trials, which ought to be published in full."

LYCEUM OF NATURAL HISTORY.


There was an unusually large attendance of members at the meeting of the Lyceum of Natural History, on Monday evening, the 6th inst. , to listen to an address by Professor B. Waterhouse Hawkins, on the progress of the work of the restoration of the forms of extinct animals in the Central Park. Mr. Hawkins gave an account of the difficulties he encountered at the outset, in finding any skeletons of animals in New York, with which to make comparisons, and he was finally compelled to go to Boston and Philadelphia for this purpose. After much study and many delays, the casts of the Hadrosaurus were completed, and numerous smaller skeletons prepared. At this stage of the proceedings an entire change in the administration of the Park took place, and the newly appointed Commissioners decided to suspend the work upon the Palæozoic Museum, and they dismissed Mr. Hawkins from their service.

The announcement that an end had thus been summarily put to one of the most important educational projects ever started in this country, was received by the Lyceum with profound surprise.For a few minutes after the close of Mr. Hawkins' report, no one felt disposed to make any comment, but as the truth of the great damage became apparent, there was considerable disposition manifested to have the Society give expression to its sense of the value of Mr. Hawkins' services in the cause of education, and their regret that so important a work should be suspended at this critical period.Remarks were made by Dr. Newbery, Professor Joy, Mr. Andrew H.Green, Professor Seely, Dr. Walz, Mr. Squier, and others, and the following resolutions E.G.were unanimously adopted:

Resolved, That the Lyceum of Natural History, in the city of New York, has learned with deep regret of the temporary suspension of the work of restoration of the forms of extinct animals, as hitherto prosecuted in the Central Park, under the able superintendence of Professor Waterhouse Hawkins.

Resolved, That the Society considers the proposed palæozoic museum not only a valuable acquisition to the scientific treasures and resources of the city, but also as a most important adjunct and complement to our great system of public education.

WARMING AND VENTILATION OF RAILROAD CARS.


There has been enough of denunciation against the present general method of warming and ventilating railway cars.It produces no effect on the corporations who could, if they would, adopt appliances that would not burn people to death in cases of accident, nor regularly and persistently poison them with bad air.

There is no lack of ways and means; the problem is simple and easily solved; nay—a not very extensive search through the Patent Office records will show that it has been solved already; perhaps not in the most practical and perfect manner, but still solved so well, as, were it not for corporation cupidity, would greatly add to the comfort and safety of passengers.

The real problem is how to compel corporations to recognize the fact that the public has rights they are bound to respect.It is the disregard of these rights that fills our cars with smoke, dust, and exhalations, and puts box stoves full of hot coals in the corners, ready to cook the human stew whenever a frisky car shall take a notion to turn a somersault.The invention needed is a conscience for corporations—an invention, by the way, scarcely less difficult than the one advertised for in our last issue, namely, a plan for preventing the sale of intoxicating liquors and tobacco in New Jersey.

The Railroad Gazette, imitating the English ideal of prolixity in discussion, for which Engineering has recently patted it on the back approvingly, treats us, in its issue of February 11th, to a page article, to be continued, under the title of "Warming and Ventilation of Railroad Cars." In this article the writer takes the ground that people in general are ignorant of the effects of pure air, and not being able to "see the foulness," they "therefore do not believe it exists." It is quite possible they may not be able to see the foulness, but if in the majority of railroad cars run in this country, they are not able to feel it in gritty, grimy accumulations on skin and linen, and smell it in suffocating stenches which serve, with sneeze-provoking dust, to stifle anything like comfort, their skin must be thicker, their linen more neglected, and their noses less sensitive than those of the majority of fellow travellers it has been our fortune to be cooped up with for a day's railroad journey.

The Railroad Gazette makes this wholesale charge of ignorance and insensibility the excuse for an essay on the physiology of respiration, mostly extracted from Huxley's "Elementary Lessons in Physiology," and therefore excellent in its way, though having a somewhat remote bearing upon the subject as announced in the title of the article. We trust that before this journal concludes its series of articles thus commenced, it will tell how to breathe into the breasts of the corporations which choke us in their human packing boxes, something resembling the soul which they are universally acknowledged to be destitute of. When this is done, carbonic acid, ammoniacal smells, organic exhalations, smoke, and dust, will be invited to shun the interiors of railway cars, and comparative comfort will descend upon the peregrinating public.

THE MINERAL RESOURCES OF MISSOURI.


The incalculable wealth, which lies hid in the bosom of Mother Earth, in our vast possessions of the West, is undoubtedly centered in the State of Missouri; and the development of this fund of riches must add to the national prosperity, not only by its immeasurable intrinsic value, but by its affording occupation to armies of laborers, the latter being the highest and most important consideration.

In 1852-3, a geological survey of the State was wisely decided upon, and a liberal provision for its execution made.Two valuable reports, by Professor Swallow, have been printed, in the year 1855, but the notes of his subsequent investigations have not been made public.

In the session of 1869-70, further action, in this important public work, was taken by the State legislature, and arrangements made for a still more accurate and detailed examination, under the direction of Professor A.D.Hager, of Vermont.

The distribution of metals all over the State will be seen in the following figures, taken from the St. Louis Journal of Commerce, which show the number of counties in which the various ores are found: Iron in 46 counties, lead in 43, coal in 36, copper in 24, marble in 11, zinc in 27, fire clay in 16, barytes in 10, nickel in 6, granite in 4, tin in 4, plumbago in 2, gypsum in 2, alum in 1, antimony in 4.

There is probably no country in the world so endowed as this.Of iron alone, according to the State geologist's report for 1855, there is ore of the best quality, sufficient to furnish 200,000,000 tuns of iron; and this quantity lies in a small space, in the vicinity of Pilot Knob and Iron Mountain, and within 100 miles of St.Louis.

The quality of the iron is highly spoken of by the manufacturers, and the capacity of the smelting appliances has reached to over 150,000 tuns per annum.The coal is well suited for reduction of ores, either by hot or cold blast treatment.The Scotia Iron Co.commenced operations in January, 1870; and, although the materials for building blast furnaces had to be carried 80 miles into a desert, the first furnace was blown into blast in August, 1870.This furnace will run about 24 tuns per day.The company procures ore from a hill, near the furnace, in which there is an apparently inexhaustible supply of red oxide and brown specular.This ore yields 60 per cent of pure metal.The erection of mills for making wrought iron is contemplated, and the high quality and prodigious quantity of the raw material will justify and reward any outlay of capital in this direction.

The shipment of ore to other States goes on constantly, the last year's account showing that 246,555 tuns were dispersed over Indiana, Ohio, and others.The furnaces at Kingsland, South St.Louis, Lewis Iron Co.'s Works, Carondelet, and Maramec are all well situated as to coal and limestone, the Maramec Works having a most valuable water-power.These latter works also ship about 40,000 tuns red hematite ore yearly.

SCIENTIFIC INTELLIGENCE.


According to Petermann's Mittheilungen, the new German empire, including Alsatia and Lorraine, will embrace 9,901 square miles, with 40,148,209 inhabitants.Russia alone will exceed it in extent and population, for Russia in Europe has 100,285 square miles with a population of 69,379,500.France, after the loss of Alsatia and Lorraine, will have 9,588 square miles of territory, with 36,428,548 inhabitants.Austria will number 35,943,592 inhabitants spread over a larger extent of country, namely, 10,980 square miles.Great Britain and Ireland has 5,732 square miles, with 30,838,210 inhabitants; and Italy, including Rome, has 5,376 square miles, with 26,470,000 inhabitants.In the order of population, the Governments will stand: Russia, Germany, France, Austria, and England; but in military power, the first position must henceforth be accorded to Germany.


AMERICAN INSTITUTE OF MINING ENGINEERS.

A circular has been issued by several mining engineers, proposing a meeting at Wilkes-Barre, some time in April or May next, of all persons interested in the general subjects of mining and metallurgy, for the purpose of establishing an association, to be called "The American Institute of Mining Engineers."The Institute will hold meetings periodically "in the great mining and metallurgical centers, when works of interest, such as mines, machine shops, furnaces, and other metallurgical works, can be inspected, and the members exchange their views, and consult, for mutual advantage, upon the difficulties encountered by each."There will be the usual publication of "Transactions" and "Proceedings."

The idea of forming an association of persons thus mutually interested in each other's occupations, is an excellent one; but it has been suggested by a number of scientific gentlemen that the American Association for the Advancement of Science offers every facility for the accomplishment of the objects set forth in the circular, while it affords the very great advantage of an assemblage of men learned in all departments of knowledge, whose acquaintance mining engineers would do well to make, and from whom they could learn much, while at the same time imparting of their own knowledge.

As a section of the American Association, the mining engineers would have more influence before the country, and it would perhaps be well for them to stop and consider before establishing a separate institute.


CONSUMPTION OF SUGAR, COFFEE, AND TEA.

E. Behm gives in his geographical year book, for 1870, the following estimate of the consumption of sugar, coffee, and tea, per capita, in various countries:

COUNTRIES.Sugar, lbs.Coffee, lbs.Tea, lbs.
Great Britain
United States
Holland
France
Norway
Sweden
Switzerland
Germany
Denmark
Belgium
Portugal
Italy
Austria
Spain
Russia
35.96
24.63
14.86
14.30
11.04
9.80
9.60
9.42
9.00
7.18
6.33
5.20
4.93
4.23
2.40
0.90
5.68
7.03
2.32
6.92
0.80
5.28
4.03
3.40
8.59
0.69
0.90
1.30
0.01
0.007
3.190
 .  .  .  .
0.800
0.018
0.060
0.060
 .  .  .  .
0.035
0.400
0.018
0.040
0.020
0.012
0.040
0.160

The entire consumption of sugar in Europe has averaged, during the last few years, three thousand four hundred and ten million pounds (3,410,000 pounds), and for the whole world it is set down at nearly twice that amount.It is estimated that three fourths of the sugar is made from cane, and one fourth from the beet.

The consumption of coffee has doubled in most countries during the last twenty years.

Unpleasant Discovery in the Patent Office—Levying Black Mail.

"The Patent Office has been, during the past week, in a high state of excitement, occasioned by the discovery of the operations of E.W.W.Griffin, clerk in charge of the draftsmen's division, who, it appears, has been levying black mail on the lady employés of the office, for nearly two years.During the administration of Colonel Fisher, late Commissioner of Patents, a large number of ladies were employed, for the purpose of recopying drawings, when ordered by the inventors, of patents already on file.

"These ladies were placed under charge of Griffin, with power to retain them in office so long as their services were satisfactory.It has been proved that Griffin hired the ladies at regular salaries of $1,000 per annum, the most of whom he blackmailed to the amount of $400 per year each.It is estimated that he has made $1,000 per month for the past two years.

"The matter was brought to the notice of Commissioner Duncan, and an investigation ordered, which resulted in the dismissal of Griffin.

"It is thought that there are other cases of this kind, and the Commissioner expresses his determination to ferret them all out, and make a clean sweep of all parties in his department engaged in swindling operations, against the government or against individuals.

"The Patent Office has for a long time been considered a rich field for operations of this kind, and investigations have often been suggested, but passed unheeded by the proper authorities.

"It is openly stated that an investigation into the relations existing between certain examiners of patents and certain patent agents, would disclose a more fearful state of blackmailing than exists in all the other government departments combined."

[We find the above sensational paragraph among the recent Washington items of the Evening MailWe are in a position to say that "the high state of excitement" alluded to has existed only in the brain of the newspaper correspondent.The facts, in brief, are these: In July, 1869, a lady, and wife of one of the clerks in the draftsmen's room, made application to Commissioner Fisher for a position in the copying division of the same department; and, upon the urgent solicitation and recommendation of Mr. E.W.W.Griffin, chief of the division, she was appointed, and has held the position from that time until now, receiving as salary $1,000 per annum, which, with the full knowledge of her husband, she has divided with Griffin, in consideration of his services in procuring for her the appointment.About a month ago, one of the lady's friends got hold of the matter, and reported it to the Court, which resulted in an investigation and the subsequent dismissal of Griffin.This is the only case of the kind that we have heard of, and we have no reason to believe that there is any other, or that corruption exists in the Examining Corps, as alleged.

Eds

A method of testing the purity of samples of water, by watching the rapidity of its action on soap and similar compounds, has been introduced by the French savants, MM. Boutron and Boudet. The experiment tests, at the same time, the purity of the soap. Dissolved in water in which lime is held in solution, the soap is precipitated in hard white flakes. If the quantity of soap put in the lime water be noted, it will be found that the smaller the quantity producing precipitation, the purer the soap. The Journal de Pharmacie et de Chemie (of Paris) reports some experiments, on this subject, by M. F. Schulze.

Louisiana State Fair—The fifth State fair of the Mechanics, and Agricultural Fair Association of Louisiana will commence in the city of New Orleans, on Saturday, April 8, 1871, and continue nine days.Over $20,000 in premiums are offered.Rules, regulations, and schedule of premiums may be obtained of the Secretary and Treasurer, Luther Homes, Esq., New Orleans, La.

Knitted Goods—John Kent advertises, in this paper, valuable machinery for the manufacture of knitted goods, to which we invite the attention of all who are interested in this branch of industry.Mr. Kent has devoted many years to the perfection of these machines.

Kaolin, a white clay, used largely in the adulteration of flour, starch, and candles, is found near Augusta, Ga., and is sent to the Northern States in large quantities.

We are indebted to James Vick, practical florist, Rochester, N.Y., for a choice variety of flower seeds.



NEW BOOKS AND PUBLICATIONS.


A Complete Guide for Coach PaintersTranslated from the French of M.Arlot, Coach Painter, for Eleven Years Foreman of Painting to M.Eherler, Coach Maker, Paris.By A.A.Fesquet, Chemist and Engineer.To which is added an Appendix, containing Information respecting the Materials and the Practice of Coach and Car Painting and Varnishing, in the United States and Great Britain.Philadelphia: Henry Carey Baird, Industrial Publisher, 406 Walnut street.London: Sampson Low, Son & Marston, Crown Buildings, 188 Fleet street.1871.Price, by mail, to any part of the United States, $1.25.

This is another of the large number of practical works and industrial treatises issued from the press of Mr. Baird. It is intended as a practical manual for the use of coach painters, and we must say, upon examination of its contents, that we think it admirably adapted to meet the wants of that class of artisans for which it has been prepared. There is perhaps no department of decorative art in which there is greater room for the display of skill and taste than in coach painting. This work, however, does not deal with the subject of art, to any great extent. Its aim is to give information in regard to colors, varnishes, etc., and their management in carriage painting in the plainest manner, and in this way it thoroughly fulfils the intention of the author.

On the Generation of SpeciesBy St.George Mivart, F.R.S.London: Macmillan & Co.1871.

The Darwinian theory of the Origin of Species, has, perhaps, aroused more attention, excited more dispute, and won more converts in a shorter time among scientific and unscientific men, than any other of equal importance promulgated in the 19th century. It seems to be the rule either to swallow the theory whole, or reject it as unworthy of belief, and as conflicting with orthodoxy. The author of the work before us has, however, taken a middle ground, from which we opine it will be difficult to dislodge him, though it is within full range of the batteries of both the contending parties. While he admits the truth of Darwin's views regarding the operation of natural selection as a cause of the origin of species, he denies that it is the sole cause, yet maintains that if it could be demonstrated to be the sole cause, it would in no manner conflict with orthodox belief in the Scriptures as the revelation of God to mankind. The perfect candor of the author is one of the marked features of the discussion, and his style is a model of pure terse English writing, seldom, if ever, excelled by any scientific writer. The work is an octavo, most beautifully printed on tinted paper, and illustrated by many fine wood engravings.

The Architect's and Builder's Pocket Companion and Price Book, Consisting of a Short but Comprehensive Epitome of Decimals, Duodecimals, Geometry and Mensuration; with Tables of U.S.Measures, Sizes, Weights, Strengths, etc., of Iron, Wood, Stone, and Various Other Materials; Quantities of Materials in Given Sizes and Dimensions of Wood, Brick, and Stone; and a Full and Complete Bill of Prices for Carpenter's Work; also Rules for Computing and Valuing Brick and Brick Work, Stone Work, Painting, Plastering, etc. By Frank W.Vogdes Architect.Philadelphia: Henry Carey Baird, Publisher, 406 Walnut street.Price by mail, postpaid, $2.

This is a small work, but printed in small type, and containing a large amount of useful matter, thoroughly indexed for reference; bound in morocco; and provided with a clasp, so as to be conveniently carried in the pocket.

Gas Superintendent's Pocket Companion for the year 1871. By Harris & Brother, Gas Meter Manufacturers, Nos. 1115 and 1117 Cherry street, Philadelphia. Philadelphia: Henry Carey Baird, Industrial Publisher, 406 Walnut street.

We find in this pocket-book much of interest to gas consumers, as well as to gas makers. The subject of meters is fully discussed. The work is bound in pocket-book style, in flexible morocco binding. Price, by mail, postpaid, $2.


The Charge for Insertion under this head is One Dollar a Line.If the Notices exceed Four Lines, One Dollar and a Half per Line will be charged.


The paper that meets the eye of manufacturers throughout the United States—Boston Bulletin, $4.00 a year.Advertisements 17c.a line.

Half Interest for sale in established Machinery Depot, new and second-hand.Steam fitting connected.Small capital, with energy, required.Address T.V.Carpenter, Advertising Agent, Box 773, New York.

See advertisement of a Woolen Mill for sale.A bargain.

I am active, have a clear record, and some capital.How can I make some money?F.Carmill, Box 1268, Boston, Mass.

Pattern Letters for Machinists, Molders, and Inventors, to letter patterns of castings, all sizes.Address H.W.Knight, Seneca Falls, N.Y.

Improved mode of Graining Wood, pat.July 5, '70, by J.J.Callow, Cleveland, O.See illustrated S.A., Dec.17, '70.Send stamp for circular.

Can a round, spring-steel rod be drawn to any desired length, with a true taper to a point, with equal elasticity the whole length, and rolled temper?What is the price per hundred pounds, and where can they be procured?Answer "Sportsman," Malone, N.Y.

Manufacturers of Foot Lathes and other light machinery please address Geo.B.Kirkham, 167 E.33d st., N.Y.city.Business of importance!

Safety Kerosene Lamps (Perkins & House's Patent).Explosion or breaking impossible; light equal to gas, and no odor.Families supplied and canvassers appointed, by Montgomery & Co., 42 Barclay st., New York, or Cleveland, O.

All parties wanting a water wheel will learn something of interest by addressing P.H.Wait, Sandy Hill, N.Y., for a free circular of his Hudson River Champion Turbine.

Ashcroft's Low Water Detector, $15; thousands in use; 17 year's experience.Can be applied for $1.Send for circular.E.H.Ashcroft, Boston, Mass.

Wanted.—Machines for manufacturing Pails, Tubs, and Matches.Also, competent man to superintend construction of buildings, and manage all parts of business when complete.Address, with descriptive circulars, price, etc., No.266 Lexington avenue, New York.

Turbine Water Wheels, Portable and Stationary Engines, Gang and Circular Saw Mills, Rolling Mill Machinery, and Machinery for Axe Manufacturers, manufactured by Wm.P.Duncan, Bellefonte, Pa.

For best Power Picket Header in use, apply to Wm.P.Duncan, Bellefonte, Pa.

New Blind Wirer and Rod Cutter.B.C.Davis & Co., Binghamton, N.Y.

Self-testing Steam Gage.There's a difference between a chronometer watch and a "bull's eye."Same difference between a self-tester and common steam gage.Send for Circular.E.H.Ashcroft, Boston, Mass.

See advertisement of L.& J.W.Feuchtwanger, Chemists, N.Y.

$3.50.Stephens' Patent Combination Rule, Level, Square, Plumb, Bevel, etc. See advertisement in another column.Agents wanted.

American Boiler Powder Co., Box 315, Pittsburgh, Pa., make the only safe, sure, and cheap remedy for "Scaly Boilers."Orders solicited.

Belting that is Belting.—Always send for the Best Philadelphia Oak-Tanned, to C.W.Arny, Manufacturer, 301 Cherry st., Phil'a.

E.Howard & Co., Boston, make the best Stem-winding Watch in the country.Ask for it at all the dealers.Office 15 Maiden Lane, N.Y.

For mining, wrecking, pumping, drainage, and irrigating machinery, see advertisement of Andrews' Patents in another column.

The best place to get Working Models and parts is at T.B.Jeffery's, 160 South Water st., Chicago.

Brown's Coalyard Quarry & Contractors' Apparatus for hoisting and conveying material by iron cable.W.D.Andrews & Bro, 414 Water st., N.Y.

Improved Foot Lathes.Many a reader of this paper has one of them.Selling in all parts of the country, Canada, Europe, etc. Catalogue free.N.H.Baldwin, Laconia, N.H.

Peteler Portable R.R.Co.contractors, graders.See adv'ment.

E.P.Peacock, Manufacturer of Cutting Dies, Press Work.Patent Articles in Metals, etc. 55 Franklin st., Chicago.

Peck's Patent Drop Press.Milo Peck & Co., New Haven, Ct.

Millstone Dressing Diamond Machine—Simple, effective, durable.For description of the above see Scientific American, Nov.27th, 1869.Also, Glazier's Diamonds.John Dickinson, 64 Nassau st., N.Y.

Steel name stamps, figures, etc. E.H.Payn, M'f'r, Burlington, Vt.

Cold Rolled-Shafting, piston rods, pump rods, Collins pat.double compression couplings, manufactured by Jones & Laughlins, Pittsburgh, Pa.

Keuffel & Esser 116 Fulton st., N.Y., the best place to get 1st-class Drawing Materials, Swiss instruments, and Rubber Triangles and Curves.

For Solid Wrought-iron Beams, etc., see advertisement.Address Union Iron Mills, Pittsburgh, Pa., for lithograph, etc.

For the best Self-regulating Windmill in the world, to pump water for residences, farms, city buildings, drainage, and irrigation, address Con.Windmill Co., 5 College Place, New York.

The Merriman Bolt Cutter—the best made.Send for circulars.H.B.Brown & Co., Fair Haven, Conn.

Taft's Portable Hot Air, Vapor and Shower Bathing Apparatus.Address Portable Bath Co., Sag Harbor, N.Y.(Send for Circular.)

Glynn's Anti-Incrustator for Steam Boilers—The only reliable preventive.No foaming, and does not attack metals of boilers.Price 25 cents per lb.C.D.Fredricks, 587 Broadway, New York.

For Fruit-Can Tools, Presses, Dies for all Metals, apply to Bliss & Williams, successor to May & Bliss, 118, 120, and 122 Plymouth st., Brooklyn, N.Y.Send for catalogue.

2d-hand Worthington, Woodward and Novelty Pumps, Engines 25 to 100 H.P., 60 Horse Loc.Boiler.W.D.Andrews & Bro., 414 Water st., N.Y.

Agents wanted, to sell the Star Bevel.It supersedes the old style.Send for Circular.Hallett & White, West Meriden, Conn.

English and American Cotton Machinery and Yarns, Beam Warps and Machine Tools.Thos.Pray, Jr., 57 Weybosset st., Providence, R.I.

For small, soft, Gray Iron Castings, Japanned, Tinned, or Bronzed, address Enterprise Manufacturing Company, Philadelphia.

Conklin's Detachable Rubber Lip, for bowls, etc., works like a charm.For Rights, address O.P.Conklin, Worcester, Mass., or A.Daul, Philadelphia, Pa.

To Ascertain where there will be a demand for new machinery or manufacturers' supplies read Boston Commercial Bulletin's Manufacturing News of the United States.Terms $4.00 a year.


Facts for the Ladies.

In 1870, Mrs. W.made, with her Wheeler & Wilson machine, 2,255 vests, besides doing her family sewing for six persons.


The Pittsburgh, Pa., "Leader" says:

"The firm of Geo.P.Rowell & Co.is the largest and best Advertising Agency in the United States, and we can cheerfully recommend it to the attention of those who desire to advertise their business scientifically and systematically in such a way; that is, to secure the largest amount of publicity for the least expenditure of money."


After an exhaustive trial, at American Institute Fair for 1870, Pratt's Astral Oil was pronounced the safest and best.


Dyspepsia: Its Varieties, Causes, Symptoms, and Cure. By E.P.Miller, M.D. Paper, 50cts. ; Muslin, $1. Address Miller, Haynes & Co, 41 West Twenty-sixth st., New York city.


Vital Force: How Wasted and How Preserved; or, Abuses of the Sexual Function, their Causes Effects and Means of Cure. By E.P.Miller M.D. Paper, 50cts. Address Miller, Haynes & Co, 41 West Twenty-sixth st., New York city.



CORRESPONDENTS who expect to receive answers to their letters must, in all cases, sign their names.We have a right to know those who seek information from us; besides, as sometimes happens, we may prefer to address correspondents by mail.

SPECIAL NOTE.—This column is designed for the general interest and instruction of our readers, not for gratuitous replies to questions of a purely business or personal nature.We will publish such inquiries, however, when paid for as advertisements at 1.00 a line, under the head of "Business and Personal."

All reference to back numbers must be by volume and page.


Mixing Metals—All the hard gray American charcoal iron, of which car wheels and all such work are made, requires more heat and a longer time to melt than soft iron, especially Scotch pig, which is the most fluid and the easiest to melt of any iron.Consequently, unless the melter exercises good judgment in charging, the Scotch pig will melt and run off before the car-wheel iron is melted.If G.H.P.be particular in the quality and strength of his iron, he will make better results by using soft American charcoal pig, with old car-wheel iron.It will make stronger castings, mix better, and melt more uniformly; but he should always recollect in charging his furnace that soft iron will melt before hard in the same position, in the cupola.I also think he had better use a larger proportion of soft pig, as every time cast iron is melted it becomes harder, so much so that iron which can be filed and turned with ease, when re-cast will often be found too hard to work.—J.T., of N.Y.

Hardening Tallow—If E.H.H.will use one pound of alum for every five pounds of tallow, his candles will be as hard and white as wax.The alum must be dissolved in water, then put in the tallow, and stirred until they are both melted together, and run in molds.—F.O.H.

L.L., of N.Y.—According to Ure, strass is made as follows: 8 ounces of pure rock crystal or flint, in powder, mixed with 4 ounces of salt of tartar, are to be baked and left to cool.The mixture is then poured into hot water, and treated with dilute nitric acid till it ceases to effervesce, and the "frit" is then washed in water till the water comes off tasteless.The frit is then dried, and mixed with 12 ounces of white lead, and this last mixture reduced to fine powder, and washed with distilled water; 1 ounce of calcined borax is now added to every 12 ounces of the mixture, the whole rubbed together in a porcelain mortar, melted in a clean crucible, and poured out into pure cold water.This melting and pouring into water must be done three times, using a clean, new crucible each time.The third frit is pulverized, five drachms of niter added, and then melted for the last time, when a clean, beautiful white crystal mass results.

C.M.S., of Wis.—There are no precise proportions observed in making the coal-tar and gravel walks of which you speak.The aim is to saturate the gravel with the hot tar without surplus.The interstices of the gravel are simply to be filled, and the amount required to do this depends wholly upon the coarseness or fineness of the gravel employed.

W.P.T., of Ohio.—Two teams of horses, of equal strength, pulling against each other, by means of a rope, would create the same tension in the rope, as one of the teams drawing against an immovable object.

W.H.B., of Va.—Ice can be made by compressing air, and, after it has radiated its heat, allowing it to extract the heat of water with which it is brought into contact.The temperature of air at 59° Fah., would be raised, by compressing the air to one fourth its original volume, to 317° Fah; and the air would radiate and absorb again, in expanding, about 190 units of heat.

E.T.H., of Ga.—The friable sandstone, a specimen of which you send us, may, we think, be rendered firmer by soaking it in a solution of silicate of soda, and allowing it to stand till dry.

J.A.V., of Ohio.—The use of steam expansively, by means of cut-off appliances, enables the expansive force of the steam to be utilized, which cannot be done when the pressure is maintained at one standard, and steam admitted through the fall stroke.It takes no more power to do a given amount of work in one case than in the other, but more boiler capacity, and more fuel, as the working power of the steam is more economically applied when the cut-off is used.

Geo.F.R., of Ohio.—Type metal is composed of 3 parts lead and 1 part antimony for smallest, hardest, and most brittle types; 4 of lead and 1 of antimony for next grade; 5 of lead and 1 of antimony for medium sizes; 6 of lead and 1 of antimony for larger types; and 7 of lead and 1 of antimony for the largest.

E.J.M., of Texas.—The term "power of a boiler" means its evaporating power, and in that sense is proper.If its evaporative power be sufficient to perform a given amount of work, it is proper to estimate that work in horse power.Water can not be pumped out of a pipe from which atmospheric air is excluded.A pipe driven into a soil impervious to air, can never yield water unless the water is forced up by hydraulic power, as in the artesian system.

A.P.Y., of N.Y.—You will find descriptions of iron enamelling processes, on pages 297 and 408, Vol.XII.of this journal.It can be done in colors.See Ure's "Dictionary of Arts and Manufactures."

H.C., of Pa.—We do not think increasing the size of the journals of your car axles from 2½ inches to 6 inches diameter, would make them run lighter.

H.H.A., of N.Y.—The lining up of a beam engine, in a vessel, is a process for which no definite mode of procedure is exclusively applicable.It is an operation to which common sense and judgment must be brought, and for which each engineer must be a law unto himself.

J.S., of Va.—The use of horizontal propellers to force balloons up or down is not a new suggestion.It has been tried, but, we believe, without much practical success.

J.T .S., of N.Y.—You will find further information on the subject of transmitting power by compressed air, in our editorial columns of last week.


APPLICATIONS FOR EXTENSION OF PATENTS.

Harvesters—William T.B.Read, Chicago, Ill., has petitioned for an extension of the above patent.Day of hearing, May 17, 1871.

Mode of Fastening Sheet Metal on Roofs, etc—Asa Johnson, Brooklyn, N.Y., has petitioned for an extension of the above patent.Day of hearing, May 3, 1871.

Method of Printing in Colors—Rosalie Croome, Brooklyn, N.Y., has petitioned for an extension of the above patent.Day of hearing, May 3, 1871.

Machinery for Compressing Gaseous Bodies—William A.Royce, Newburgh, N.Y., has petitioned for an extension of the above patent.Day of hearing, May 10, 1871.

Plows—John S.Hall, Pittsburgh, Pa., has petitioned for an extension of the above patent.Day of hearing, May 17, 1871.

Carriage Wheels—James D.Sarven, New Haven, Conn., has petitioned for an extension of the above patent.Day of hearing May 24, 1871.


New Patent Law of 1870.

INSTRUCTIONS

HOW TO OBTAIN

LETTERS-PATENT

FOR

New Inventions

Information about Caveats, Extensions, Interferences, Designs, Trade-Marks, and Foreign Patents.


or Twenty-five years, Munn & Co. have occupied the leading position of Solicitors of American and European Patents. During this long experience they have examined not less than Fifty Thousand Inventions, and have prosecuted upwards of Thirty Thousand Applications for Patents. In addition to this they have made, at the Patent Office, Twenty-Five Thousand Special Examinations into the novelty of various Inventions.

The important advantage of Munn & Co.'s American and European Patent Agency is that the practice has been tenfold greater than that of any other agency in existence, with the additional advantages of having the aid of the highest professional skill in every department and a Branch Office at Washington, that watches and supervises cases when necessary, as they pass through Official Examination.

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Inventors who desire to consult with Munn & Co. are invited to call at their office 37 Park Row, or to send a sketch and description of the invention, which will be examined and an opinion given or sent by mail without charge.

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is made into the novelty of an invention by personal examination at the Patent Office of all patented inventions bearing on the particular class.This search is made by examiners of long experience, for which a fee of $5 is charged.A report is given in writing.

To avoid all possible misapprehension, Munn & Co. advise generally, that inventors send models. But the Commissioner may at his discretion dispense with a model—this can be arranged beforehand.

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Munn & Co. give very special attention to the examination and prosecution of rejected cases filed by inventors and other attorneys. In such cases a fee of $5 is required for special examination and report; and in case of probable success by further prosecution and the papers are found tolerably well prepared, Munn & Co. will take up the case and endeavor to get it through for a reasonable fee to be agreed upon in advance of prosecution.

CAVEATS

Are desirable if an inventor is not fully prepared to apply for a Patent.A Caveat affords protection for one year against the issue of a patent to another for the same invention.Caveat papers should be carefully prepared.

The Government fee on filing a Caveat is $10, and Munn & Co.'s charge for preparing the necessary papers is usually from $10 to $12.

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A patent when discovered to be defective may be reissued by the surrender of the original patent, and the filing of amended papers.This proceeding should be taken with great care.

DESIGNS, TRADE-MARKS, & COMPOSITIONS

Can be patented for a term of years, also new medicines or medical compounds, and useful mixtures of all kinds.

When the invention consists of a medicine or compound, or a new article of manufacture, or a new composition, samples of the article must be furnished, neatly put up.There should also be forwarded a full statement of its ingredients, proportions, mode of preparation, uses, and merits.

Canadians and all other foreigners can now obtain patents upon the same terms as citizens.

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Munn & Co. have solicited a larger number of European Patents than any other agency. They have agents located at London, Paris, Brussels, Berlin, and other chief cities. A pamphlet containing a synopsis of the Foreign Patent Laws sent free.

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Under this heading we shall publish weekly notes of some of the more prominent home and foreign patents.


Self-Acting Shackle and Car Brake—Lyman Alphonzo Russell, Shrewsbury, Vt.—This invention relates to improvements in self-acting shackles and car brakes, and consists in an improved connection of the brakes with the shackle, for automatic operation, whereby the connection may be readily so adjusted that the brakes will not be set in action as when required to back up the train.

Feed Bags for Horses—W.A.Hough, South Butler, N.Y.—This invention relates to a new and useful improvement in feed bags for horses, and consists in making the bag self-supplying, by means of one or more reservoirs, the discharge orifices of which reservoirs are closed by a valve or valves.

Truss—Adam Hinoult, Montgomery, N.Y.—This invention has for its object to furnish an improved truss, which shall be so constructed as to yield freely to the various movements of the body of the wearer, while holding the rupture securely in place.

Governor for Steam Engines—Charles A.Conde, Indianapolis, Ind.—This invention relates to a new method of regulating the movement of the balls of a steam governor, with a view of adjusting the same in proportion to the increased or diminished centrifugal force.

Circular Saw Guard—G.W.Shipman, Ischua, N.Y.—This invention relates to a new and useful improvement in means for protecting the operator and others, near running circular saws, from injury, and it consists in a movable guard, operated by means of the saw carriage, in such a manner that, during the period of danger (when the saw is not cutting), the guard covers the saw, and is thrown back from the saw when the latter is in actual use.

Carpet-cleaning Machine—J.C.Craft, Baltimore, Md.—This invention relates to a machine, through which a carpet may be passed, and so beaten and brushed, during its passage, as to come out of the machine thoroughly cleansed.The invention consists in the peculiar construction and arrangement of beaters and brushes for effecting this result.

Combined Cotton and Corn Planter—L.A.Perrault, Natchez, Miss.—This invention relates to improvements in machinery for planting seed, and consists in a combination, in one machine, of a seed-dropping apparatus, adapted for corn, and another adapted for cotton, in a manner to utilize one running gear for the two kinds of seed, and thereby save the expense of separate gear for each.

Lime Kiln—T.A.Kirk, Kansas City, Mo.—This invention has for its object to furnish an improved lime kiln, which shall be so constructed as to enable the kiln to be worked from the front, in firing and in drawing the lime and ashes, which will not allow cold or unburnt rock to pass through, and which will consume its own smoke.

Car Brake—S.D.Tripp, Lynn, and Luther Hill, Stoneham, Mass.—This invention relates to improvements in railroad car brakes, and consists in an arrangement, on the locomotive or tender, of a steam cylinder and piston, and the arrangement, on the cars, in connection with the brakes, of sliding rods, so that the rod of the car next to the engine or tender, being moved backwards by the piston rod of the above cylinder, will bring the brakes of the rear wheels down upon them, as well as the brakes of the tender, and slacken the speed thereby, so that the rear projecting end of the brake rod will come in contact with the rod of the next car, and set its brakes in action in like manner, and so on, throughout the train.The arrangement of the said brake actuating rods is such that no matter which end of the car is foremost, the wheels of one track will be acted on by the brakes.

Combined Ruler, Blotter, and Paper Cutter—Hugh S.Ball, Spartanburgh, S.C.—This invention relates to a new and useful improvement in a combined ruler, blotter, and paper cutter, three articles indispensable for the desk, combined in one.

Reed for Organs and Melodeons—Augustus Newell, Chicago, Ill.—The object of this invention is to so construct the tongue-butts, or shanks, of musical reeds, that the same cannot, during the vibratory motion of the tongues, be raised from their seats.

Anti-Friction Compound—Victory Purdy, Poughkeepsie, N.Y.—This invention relates to a new and useful compound for lubricating railroad car axle journals, and other journal bearings.



[We present herewith a series of inquiries embracing a variety of topics of greater or less general interest.The questions are simple, it is true, but we prefer to elicit practical answers from our readers, and hope to be able to make this column of inquiries and answers a popular and useful feature of the paper.]


1.Emery Wheels—Can I make emery wheels similar to those used in a foot lathe, that will answer for sharpening fine tools, such as gouges, rounds, and hollows, and if so, how shall I proceed?—F.W.

2.Boiler Furnace—I have two boilers, twenty-four feet long and four feet in diameter each, with five ten-inch flues.The fire passes under the boiler, and enters the flues at the back end, passes through the flues, and enters the smoke stack at the front end.I use hard pine wood for fuel.Will some of your many readers give me the best way of constructing the flue under the boiler, from the end of the grate bars to where it enters the flues at the back end, and also state the proper distance from the back wall to the end of the boiler?—N.H.

3.Medal Casts—I have some medals which I should like to copy.Having tried several times, and failed, I thought that I would ask advice through your query columns.I do not know of what the medals are manufactured.They are, I suppose, made to imitate bronze.I have tried casting them in plaster of Paris molds, but have had very poor success, as the surface of the medals was covered with small holes.The metal used was lead and antimony, seven to one.I should like to know, if there be any metal that I can cast them of, and bring out the bronze color afterwards, or if there be any metal that I can cast them of, and afterwards color by some solution.Also, of what should I make my molds?—J.E.M.

4.Removing the Taste of Tar from Rain Water—Will some of your correspondents tell me if rain water, which runs off a gravel roof, and tastes very strongly of tar, is unhealthy, and if there be anything that will prevent its tasting, as it is very disagreeable for cooking purposes?—C.E.H.

5.Sorghum Molasses—How can I separate the molasses from the sugar, in sorghum sugar mush, to make a dry merchantable sugar?

6.Flux for Aluminum—Will some of your readers tell me, through your columns, the best flux to use in melting and mixing aluminum and copper?


Inventions Patented in England by Americans.

[Compiled from the Commissioners of Patents' Journal.]

APPLICATIONS FOR LETTERS PATENT.

350.Breech-loading Fire-arms—Eli Whitney, New Haven, Conn.February 10, 1871.

352.Governor—Stilliman B.Allen, ——, Mass.February 10, 1871.

357.Windmill—A.P.Brown, New York city.February 11, 1871.

332.Furniture Casters—F.A.Gardner and H.S.Turrell, Danbury Conn.February 8, 1871.

339.Wire Fabrics for Mattresses—Samuel Rogers, New York city.February 9, 1871.

340.Screw Propeller Canal Boats—Thomas Main, Pierpoint, N.Y.February 9, 1871.

362.Flyer for Spinning Machinery—Thomas Mayor and Geo.Chatterton, Providence, R.I.February 14, 1871.

373.Telegraphic Apparatus and Detectors—W.B.Watkins, Jersey City, N.J.February 14, 1871.

381.Steam and other Safety Valves—Walter Dawson Scranton, Pa.February 15, 1871.

388.Iron Rails and Bars, and Modes of Manufacturing the same—Eldridge Wheeler, Philadelphia, Pa.February 15, 1871.



ISSUED BY THE U.S.PATENT OFFICE.


FOR THE WEEK ENDING MARCH 7, 1871.


Reported Officially for the Scientific American.


SCHEDULE OF PATENT FEES

On each Caveat$10
On each Trade-Mark$25
On filing each application for a Patent, (seventeen years)$15
On issuing each original Patent$20
On appeal to Examiners-in-Chief$10
On appeal to Commissioner of Patents$20
On application for Reissue$30
On application for Extension of Patent$50
On granting the Extension$50
On filing a Disclaimer$10
On an application for Design (three and a half years)$10
On an application for Design (seven years)$15
On an application for Design (fourteen years)$30
For Copy of Claim of any Patent issued within 30 years$1
A sketch from the model or drawing, relating to such portion of a machine as the Claim covers, from
upward, but usually at the price above-named.
$1
The full Specification of any patent issued since Nov.20, 1866 at which time the Patent Office commenced printing them$1.25
Official Copies of Drawings of any patent issued since 1836, we can supply at a reasonable cost, the price depending upon the amount of labor involved and the number of views. 
Full information, as to price of drawings, in each case, may be had by addressing 


MUNN & CO.,          

Patent Solicitors, 37 Park Row, New York.


112,309.Hose Sprinkler—William Anderson, San Francisco, Cal.

112,310.Locomotive Spark Arrester—J.G.Armstrong, New Brunswick, N.J.

112,311.Tool for Carriage Makers' Use—George Atkinson, San Francisco, Cal.

112,312.Potato Probe—John A.Beal, Waterford, N.Y.

112,313.Hinge for Carriage Doors—George W.Beers, Bridgeport, Conn.

112,314.Stove Leg—James Birckhead, Jr., Baltimore, Md.

112,315.Clothes Pin—Orris A.Bishop, Chicago, Ill.

112,316.Manufacture of Rochelle Salts and Borax—V.G.Bloede, Brooklyn, N.Y.

112,317.Beehive—Felix Brewer, Waynesville, Mo.

112,318.Thill Coupling—Theodore Burr (assignor to Allen Muir and Henry Muir), Battle Creek, Mich.

112,319.Evaporating Pan for Saccharine Liquids—F.C.Butler, Bellows Falls, Vt., assignor to himself and James B.Williams, Glastonbury, Conn.

112,320.Door Securer—William H.Caldwell, Wheeling, W.Va.

112,321.Toe-calk Bar—R.B.Caswell, Springfield, Mass.Antedated March 2, 1871.

112,322.Glass Flattening Furnace and Leer—James Clabby, Lenox, Mass.

112,323.Spring Bed Bottom—Alex.Cole, Manamuskin, N.J.

112,324.Water Wheel—E.E.Coleman, West Cummington, Mass.

112,325.Toy Horse and Carriage—John B.Cuzner, Bridgeport, Conn.

112,326.Mackerel-line Holder—E.L.Decker, Southport, Me.

112,327.Sewing Machine—J.William Dufour, Stratford, Conn.

112,328.Steam Boiler—Edwards Evans, North Tonawanda, N.Y.

112,329.Medical Compound for Cure of Catarrh and Asthma—Erastus Field, Ostrander, Ohio.

112,330.Machine for Grinding the Cutters of Mowers, etc.—H.C.Fisk, Wellsville, N.Y.

112,331.Machine for Making Hooks and Eyes—Jeremy T.Ford, San Francisco, Cal.

112,332.Churn—Thompson Freeman, Westfield, Ill.

112,333.Attachment for Revolving Mold Boards for Plows—J.S.Godfrey, Leslie, Mich., assignor to himself and S.M.Loveridge, Pittsburgh, Pa.

112,334.Grain Cleaner and Fertilizer Sifter—J.A.Green, Mill Dale, Va.

112,335.Screw Propulsion—E.C.Gregg (assignor to A.H.Gregg and C.P.Gregg), Trumansburg, N.Y.

112,336.Seeding Machine—P.M.Gundlach, Belleville, Ill.

112,337.Compound for Kindling Fires—J.L.Hannum and S.H.Stebbins, Berea, Ohio.

112,338.Lawn Mower—Benjamin Harnish, Lancaster, and D.H.Harnish, Pequea, Pa.

112,339.Composition for Pavements—C.B.Harris, New York city.Antedated February 25, 1870.

112,340.Spring for Vehicles—John R.Hiller, Woodland, Cal.

112,341.Harvester Rake—S.T.Holly, (assignor to John P.Manny), Rockford, Ill.

112,342.Door Clamp—Henry O.Hooper, Diamond Springs, Cal.

112,343.Taper Holder—Thomas W.Houchin, Morrisania, N.Y.

112,344.Metallic Garter—Henry A.House, Bridgeport, Conn.

112,345.Bobbin Winder—Henry A.House, Bridgeport, Conn.

112,346.Method of Knitting Stockings, etc.—Henry A.House, Bridgeport, Conn.

112,347.Apparatus for Evaporating and concentrating Liquids—John Howarth, Salem, Mass.Antedated March 1, 1871.

112,348.Apparatus for Evaporating and Concentrating Liquids—John Howarth, Salem, Mass.Antedated March 1, 1871.

112,349.Apparatus for Removing Oil from Vegetable and other Matters—Elias S.Hutchinson, Baltimore, Md.

112,350.Apparatus and Process for Removing Oil from Grain, Seeds, etc.—Elias S.Hutchinson, Baltimore, Md.

112,351.Chandelier—Charles F.Jacobsen, New York city.

112,352.Culinary Vessel—Carrie Jessup, New Haven, Conn.

112,353.Machine for Cutting Leather—Aberdeen Keith, North Bridgewater, Mass.

112,354.Attaching Knobs to their Spindles—John F.Keller and Nathaniel Sehner, Hagerstown, Md.

112,355.Miter Machine—T.E.King, Boston, Mass.

112,356.Take-up for Corset Looms—Julius Kuttner, New York city.

112,357.Elevator and Carrier—T.W.Lackore, Worth, Ill.

112,358.Apparatus for Burning Hydrocarbon Oils—James R.Lee, Grass Valley, Cal.

112,359.Burglar Alarm—Robert Lee, Cincinnati, Ohio.

112,360.Telegraph Apparatus—L.T.Lindsey, Jackson, Tenn.

112,361.Harvester—J.P.Manny, Rockford, Ill.

112,362.Harvester—J.P.Manny, Rockford, Ill.

112,363.Harvester Rake—J.P.Manny, Rockford, Ill.

112,364.Cheese Curd Sink—H.C.Markham, Collinsville, N.Y.

112,365.Mowing Machine—H.C.Markham and Dewitt C.Markham, Collinsville, N.Y.

112,366.Propeller—Alex.J.Marshall, Warrenton, Va.Antedated March 3, 1871.

112,367.Oiler—Edward McDuff and E.D.Forrow, Warwick, R.I.

112,368.Wash Boiler.—John McInnes, Oxford, Pa.

112,369.Propelling Canal Boats.—H.B.Meech, Fort Edward, N.Y.Antedated February 25, 1871.

112,370.Water-proof Compound for Coating Cloth Wood, Metals, etc.—Peter E.Minor, Schenectady, N.Y.

112,371.Cooking Stove.—W.N.Moore, Neenah, Wis.

112,372.Boring Machine.—J.H.Pardieck (assignor to himself and S.M.Brown), Acton, Ind.

112,373.Vapor Burner.—R.W.Park, Philadelphia, Pa.

112,374.Machine for Pointing Blanks for Cultivator Teeth.—John Pedder and George Abel, West Pittsburgh, Pa.

112,375.Bale Tie.—J.E.Perkins, San Francisco, Cal.

112,376.Lining Walls with Felt, etc.—James Phillips, Chicago, Ill.

112,377.Cooking Stove.—Samuel Pierce, Boston, Mass.

112,378.Tack.—A.A.Porter, New Haven, Conn.Antedated Feb.25, 1871.

112,379.Machine for Shaping and Cutting Gear Cutters.—F.A.Pratt (assignor to the Pratt & Whitney Company), Hartford, Conn.

112,380.Combination Camera and Developing Box.—E.C.Ratzell, Philadelphia, Pa.

112,381.Punching Machine.—J.C.Rhodes, South Abington, Mass.

112,382.Washing Machine.—J.W.Ricker, Chelsea, Mass.

112,383.Curtain Fixture.—Charles Robin.Chester, Conn.

112,384.Machine for Making Printers' Leads.—Isaac Schoenberg, New York city.

112,385.Slide Valve for Steam Riveting Machines.—Coleman Sellers (assignor to William Sellers & Co.), Philadelphia, Pa.

112,386.Machine for Polishing Thread.—Samuel Semple, Sr., John Semple, Samuel Semple, Jr., and R.A.Semple, Mount Holly, N.J.

112,387.Paint Brush.—F.S.Shearer, Washington, Ill.

112,388.Bee Hive.—S.A.Short, F.J.Short, J.B.Short, and Jasper Kile, Decatur, Ala.

112,389.Apparatus for Removing Oil from Vegetable and other Matter.—Thomas Sim, Baltimore, Md.

112,390.Retort for Producing Bisulphide of Carbon.—Thomas Sim, Baltimore, Md.

112,391.Utilizing the Silky Down of the Wild Cotton. —M. H. Simpson, Boston, Mass.

112,392.Pruning Shears.—Frank Smiley, Batavia, N.Y.

112,393.Water-closet Valve.—A.J.Smith, San Francisco, Cal.

112,394.Gang Plow.—J.W.Sursa, San Leandro, Cal.

112,395.Grinding Pan and Amalgamator.—W.H.Thoss, West Point, Cal.

112,396.Street Lantern.—Augustus Tufts, Malden, Mass.

112,397.Cooking Stove.—Alvin Warren, Swanton, Ohio.

112,398.Safety Bridle.—James Weatherhead, San José, Cal.

112,399.Fire Grate.—George Wellhouse, Akron, Ohio.

112,400.Hay Knife.—G.F.Weymouth, Dresden, Me.

112,401.Claw Bar.—Charles Winter, Chillicothe, Ohio.

112,402.Steam Generator.—J.C.Woodhead, Pittsburgh, Pa.

112,403.Animal Trap.—W.D.Wrightson, Queenstown England.

112,404.Brush.—John Ames, Lansingburg, N.Y.

112,405.Clod Fender.—F.L.Bailey, Freeport, Ind.

112,406.Ruler.—H.S.Ball, Spartanburg, S.C.

112,407.Fanning Mill.—Benjamin Barney, Time, Ill.

112,408.Ice-cutting Machine.—Lafayett Barnum (assignor to himself and A.R.Hale), Bridgeport, Conn.

112,409.Manufacture of Ice.—T.J.Bigger, Kansas City, Mo.

112,410.Machine for Heading Bolts and Spikes.—Reinhold Boeklen, Brooklyn, N.Y., assignor to himself and Henry Torstrick New York city.Antedated Feb.28, 1871.

112,411.Washing Machine.—Joseph Boswell, L.M.Boswell, Jonathan Palmer, and J.H.James (assignors to themselves and Thomas Starbuck), Wilmington, Ohio.

112,412.Water Wheel.—E.C.Boyles, New York city.

112,413.Cotton Press.—R.M.Brooks, Pike county, Ga.

112,414.Paper-cutting Machine.—Samuel Brown (assignor to himself and C.R.Carver), Philadelphia, Pa.

112,415.Governor for Direct-acting Engines.—A.S.Cameron, New York city.

112,416.Governor for Direct-acting Engines.—A.S.Cameron, New York city.

112,417.Butt Hinge.—J.W.Carleton (assignor to the Union Manufacturing Co.), New Britain, Conn.

112,418.Machine for Cutting Sheet Metal.—C.R.Choate, East Saginaw, Mich.

112,419.Bit Brace.—William Cleveland, Lawrence, Mass., assignor to himself and James Swan, Seymour, Conn.

112,420.Steam Engine Governor.—C.A.Condé, Indianapolis, Ind.

112,421.Carpet-cleaning Machine.—J.C.Craft (assignor to himself and Antonio Rosello), Baltimore, Md.

112,422.Steam Regulator for Paper Dryers.—Daniel Crosby, Hampden, Me.

112 423.Metallic Piston and Valve Rod Packing.—G.M.Cruickshank, Providence, R.I.

112,424.Grain-thrashing and Separating Machine.—John Culham, Grand Rapids, Mich.Antedated Feb.25, 1871.

112,425.Cooking Stove.—David Curtis, Mishawaka, assignor to himself and C.B.Graham, South Bend, Ind.

112,426.Lightning Rod.—S.D.Cushman, New Lisbon, Ohio.

112,427.Hose Bridge.—Patrick Daily (assignor to himself and J.J.Kehoe), New York city.

112,428.Cover for Openings in Sidewalks.—William Dale, New York city.

112,429.Rotary Pump.—F.O.Deschamps, Philadelphia, Pa.

112,430.Machine for Cutting Files.—James Dodge, Manchester, England, assignor to David Blake, Spencertown, N.Y.

112,431.Coupling for Railway Cars.—Henry Dubs and S.G.Goodall-Copestake, Glasgow, Great Britain.

112,432.Tobacco Pipe.—P.J.Dwyer, Elizabethport, N.J.

112,433.Basket for House Plants.—Albert P.Eastman, Washington, D.C.

112,434.Sulky Plow.—Milo A.Elliott, Stratford Hollow, N.H.

112,435.Stretcher for Paintings.—James Fairman, New York city.

112,436.Body Lantern Holder.—Samuel C.Fessenden, Stamford, Conn.

112,437.Stove Leg.—Amon L.Finch, Sing Sing, N.Y.

112,438.Pump Piston.—John S.Follansbee and George Doolittle (assignors to the Forrester Manufacturing Company), Bridgeport, Conn.

112,439.Shoe.—Samuel W.Francis (assignor to himself and W.H.Newton), Newport, R.I.

112,440.Guard-Finger for Harvesters.—George Fyfe and Chester Hard, Ottawa, Ill.

112,441.Dining Table.—S.R.Gardner (assignor to himself and S.M.Marquette), Independence, Iowa.

112,442.Step Ladder.—M.Boland Geary, New York City.

112,443.Oilcloth Printing Machinery.—Ebenezer A.Goodes (assignor to Philadelphia Patent and Novelty Company), Philadelphia, Pa.

112,444.Tenoning Machine.—Lyman Gould, Norwich, Conn.

112,445.Printer's Case.—Wm.H.A.Gresham, Atlanta, Ga.

112,446.Lamp Chimney.—Geo.W.Griswold, Factoryville, Pa.

112,447.Grain Separator.—Philander Griswold, Hudson, Mich.

112,448.Clamp for Thill Couplings.—John W.Guider (assignor to himself and John Kiefer), St.Joseph, Mo.

112,449.Bird Cage.—Gottlob Gunther, New York city.

112,450.Stop Cock and Valve.—William Haas, New York city.

112,451.Valve for Steam Engines.—Joseph L.Harley, Baltimore, Md., and Xaver Fendrich, Georgetown, D.C.

112,452.Metallic Hub.—John H.Harper, Pittsburgh, Pa.

112,453.Composition for Lubricating Machinery.—E.Q.Henderson (assignor to John C.Burroughs and Richard A.Springs) Charlotte, N.C.

112,454.Post-hole Digger—Bryant B.Herrick, Decatur, Mich.

112,455.Door Check—Levi S.Hicks (assignor to himself, J.Perrin Johnson, and John Buell), Peoria, Ill.

112,456.Railway-car Brake—Luther Hill, Stoneham, and Seth D.Tripp, Lynn, Mass.

112,457.Truss—Adam Hinoult, Montgomery, N.Y.

112,458.Feed Bag for Horses—Walter A.Hough, South Butler, N.Y.

112,459.Shade Holder for Lamps—Mark W.House, Cleveland, Ohio.

112,460.Lamp Chimney—Mark Wiggins House (assignor to the Cleveland Non-Explosive Lamp Company), Cleveland, Ohio.Antedated March 1, 1871.

112,461.Horse Hay Rake—James Howard and E.T.Bousfield, Bedford, England.

112,462.Tongs for Rolling Barrels—Mark W.Ingle, Indianapolis, Ind.

112,463.Pitman—George W.Jayson, Lodi, Ohio.

112,464.Paste for Paper Hangings—John Jones (assignor to himself and Henry A.Smith), New York city.

112,465.Twine Holder—Edward M.Judd, New Haven, Ct.

112,466.Clothes Pin or Clasp—Amos L.Keeports and William Yount, Littletown, Pa.

112,467.Putting up Hams—Samuel Edward Kelly, Philadelphia, Pa.

112,468.Limn Kiln—Thomas A.Kirk, Kansas City, Mo.

112,469.Fastening for Seats for Wagons or Sleighs—John G.Knapp and John F.Robertson (assignors of one third their right to James H.Holly), Warwick, N.Y.

112,470.Potato Planter—George Knowlton (assignor for one-half his right to N.Haynes), Johnstown, Pa.

112,471.Revolving Firearm—Edwin S.Leaycroft, Brooklyn, N.Y., assignor by mesne assignment, to "Colt's Patent Firearms Manufacturing Company," Hartford, Conn.

112,472.Revolving Firearm—Edwin S.Leaycroft, Brooklyn, N.Y., assignor, by mesne assignment, to "Colt's Patent Firearms Manufacturing Company," Hartford, Conn.

112,473.Railroad Cattle-Guard Gate—J.H.Mallory, La Porte, Ind.

112,474.Back-reflecting Mirror—Richard Mason (assignor to himself and Matthew Ely), Newark, N.J.

112,475.Ventilator and Chimney Top—James McGowan (assignor to himself and Daniel H.Waring), New York city.

112,476.Apparatus for Rectifying and Refining Spirits—Frederick Measey (assignor to himself and Henry D.Fling), Philadelphia, Pa.

112,477.Tin Can—John F.Merrill (assignor to himself and Alexander Stewart), Cincinnati, Ohio.

112,478.Take-up Mechanism for Looms—John Michna and Joseph Fischer, New York city.

112,479.Combined Baker and Broiler—Wm.H.Miller, Brandenburg, Ky.

112,480.Shuttle for Sewing Machines—James D.Moore, Grinnell, Iowa.

112,481.Cotton Chopper and Grain Cultivator—Daniel Mosely, Osark, Arkansas.

112,482.Sad and Fluting Iron—Frederick Myers, New York city.

112,483.Reed for Organs and Melodeons—Augustus Newell, Chicago, Ill.

112,484.Straw Cutter—Amon Park, Germanville, Iowa.

112,485.Apparatus for Aging Whisky and Other Spirits—Josiah Peiffer and Samuel Richards, Valonia, Pa.

112,486.Combined Cotton and Corn Planter—Louis A.Perrault (assignor to himself and Joseph Huber), Natchez, Miss.

112,487.Faucet—Solomon Pfleger, Reading, assignor to himself and J.S.Pfleger, Tamaqua, Pa.

112,488.Treadle—George K.Proctor, Salem, Mass.

112,489.Lubricating Compound—Victory Purdy, Poughkeepsie, N.Y.

112,490.Fertilizer and Seeding Machine—Archibald Putnam (assignor to Elizabeth Putnam), Owego, N.Y.

112,491.Rotary Pump—George W.Putnam, South Glens Falls, N.Y.

112,492.Hat Brush—Robert Dunbar Radcliffe, Palmyra, N.Y.

112,493.Refrigerating Show Case—Thomas L.Rankin, Lyndon, Kansas, assignor to himself and D.W.Rockwell, Elyria, Ohio.

112,494.Device for Starting and Stopping Cars—Philip Rhoads, Carlisle, Pa.

112,495.Pipe-molding Machine—George Richardson, Milwaukee, Wis.

112,496.Sulky Cultivator—Richard B.Robbins, Adrian, Mich.

112,497.Hand Plow—Nelson Rue, Harrodsburg, Ky.

112,498.Mechanical Movement—Edward G.Russell, Ravenna, Ohio.

112,499.Railway Car Brake—Lyman Alphonzo Russell, Shrewsbury, Vt.

112,500.Stovepipe Cleaner—David Sanford, Ashton, Ill.

112,501.Twine Holder—Joseph B.Sargent and Purmont Bradford (assignors to Sargent & Co.), New Haven, Conn.

112,502.Dovetailing Machine—James M.Seymour, Newark, N.J.

112,503.Wooden Pavement—Eaton Shaw, Portland, Me.

112,504.Guard for Circular Saws—George W.Shipman, Ischua, N.Y.

112,505.Breech-loading Firearm—Dexter Smith and Martin J.Chamberlin, Springfield, Mass.

112,506.Spark Arrester—James Smith, Altoona, Pa.

112,507.Horse Hay Rake—Solomon P.Smith, Waterford, N.Y.

112,508.Plow—S.M.Stewart, New Harrisburg, Ohio.

112,509.Medical Compound for Treating Fever and Ague—George E.Swan, Mount Vernon, Ohio.

112,510.Device for Cooling Journals of Car Axles—Henry G.Thompson, Milford, Conn.

112,511.Cooling Journal of Car Axles—Henry G.Thompson, Milford, Conn.

112,512.Cooling Journal of Car-wheel Axles—Henry G.Thompson, Milford, Conn.

112,513.Device for Cooling Journals of Railway Cars—Henry G.Thompson, Milford, Conn.

112,514.Non-heating Handle for Sad Irons, etc—William H.Towers, Boston, Mass.

112,515.Lubricator—John Erst Uhl, Renovo, Pa.

112,516.Combined Corn Planter and Cultivator—Franklin Underwood, South Rutland, N.Y.

112,517.King Bolt—Wendel Vondersaar, Indianapolis, Ind.

112,518.Wheat Roaster—George W.Waitt (assignor to himself and Robert B.Fitts), Philadelphia, Pa.

112,519.Plaster Sower—Thomas J.West, Alfred Center, N.Y.

112,520.Ticket Holder—Henry Wexel, Providence, R.I.

112,521.Tobacco Press—Abraham N.Zell, Lancaster, Pa.

112,522.Combined Bag Holder and Scales—William Zimmerman, Lebanon, Pa.Antedated February 25, 1871.

112,523.Breech-loading Firearm—James M.Mason, Washington, D.C.


REISSUES.

4,287.Treating Fruits to Dry, Saccharify, and Preserve Them—Charles Alden, Newburg, assignor of part interest to Alden Fruit Preserving Company, New York city.Patent No.100,835, dated March 5, 1870; reissue No.4,011, dated June 7, 1870.

4,288.Device for Securing Pulleys to Shaft—John H.Buckman (assignor to himself and Peter W.Reinshagen), Cincinnati, Ohio.Patent No.98,144, dated December 21, 1839.

4,289.Shawl Strap—George Crouch, Westport, Conn.Patent No.82,606, dated September 29, 1868.

4,290.Atmospheric Dental Plate—Nehemiah T.Folsom, Laconia, N.H.Patent No.60,871, dated January 1, 1867.

4,291.Pessary—William R.Gardner, Leonardsville, N.Y.Patent No.105,191, dated July 12, 1870.

4,292.Division A.—Skate—James L.Plimpton, New York city.Patent No.37,305, dated January 6, 1863; reissue No.3,906, dated April 5, 1870.

4,293.Division B.—Skate—James L.Plimpton, New York city.Patent No.37,305, dated January 6, 1863; reissue No.3,906, dated April 5, 1870.

4,294.Apparatus for Pitching Barrels—Louis Schulze, Baltimore, Md.Patent No.106,964, dated August 30, 1870.


DESIGNS.

4,694.Picture Frame—John H.Bellamy, Charlestown, Mass.

4,695.Bell Crank and Escutcheon—Pietro Cinquini, West Meriden, Conn., assignor to Parker & Whipple Company.

4,696.Pedestal for a Cake Dish—George Gill (assignor to Reed & Barton), Taunton, Mass.

4,697.Table Caster—William Parkin (assignor to Reed & Barton), Taunton, Mass.

4,698.Buckle Frame—John E.Smith, Waterbury, Conn.

4,699.Back of a Chair or Sofa—George Unverzagt, Philadelphia, Pa.


TRADE-MARKS.

182.Hat—Nathan A.Baldwin, Milford, Conn., James H.Prentice, Brooklyn, and John R.Waller, New York city.

183.Spool Cotton—Lewis Coleman & Co., Boston, Mass.

184.Salve—Robert Dobbins, Binghamton, N.Y.

185.Soap—Leberman & Co., Philadelphia, Pa.

186.Medicine—Ridenour, Coblentz & Co., Springfield, Ohio.

187.Paper—Union Manufacturing Company, Springfield, Mass.


EXTENSIONS.

Wagons—Edgar Huson, Ithaca, N.Y.Letters Patent No.16,648, dated February 17, 1857; reissue No.2,500, dated March 5, 1867.

Operating Valve of Steam Engine—Samuel R.Wilmot, Bridgeport, Conn.Letters Patent No.16,668, dated February 17, 1857.

Hinges—John David Browne, Cincinnati, Ohio.Letters Patent No.16,678, dated February 24, 1857.

Keeper for Right and Left Hand Door Locks—Calvin Adams, Pittsburgh, Pa.Letters Patent No.16,676, dated February 24, 1857.

Solar Camera—David A.Woodward, Baltimore, Md.Letters Patent No.16,700, dated February 24, 1857; reissue No.2,311, dated July 10, 1866.

Cast Seamless Thimble Skeins for Wagons—John Benedict, Kenosha, Wis., administrator of Andrew Leonard, deceased.Letters Patent No.16,688, dated February 24, 1857; reissue No.575, dated July 27, 1858; reissue No.1,229, dated October 8, 1861.

Mode of Casting Seamless Skeins for Wagons—John Benedict, Kenosha, Wis., administrator of Andrew Leonard, deceased.Letters Patent No.16,688, dated February 24, 1857; reissue No.575, dated July 27, 1858; reissue No.1,228, dated October 8, 1861.

Breech-loading Firearms—William Cleveland Hicks, Summit, N.J.Letters Patent No.16,797, dated March 10, 1857; reissue No.1,952, dated May 9, 1865; reissue No.3,798, dated January 18, 1870; reissue No.3,860, dated March 1, 1870.

Seeding Machine—Lewis B.Myers and Henry A.Myers, Elmore, Ohio.Letters Patent No.16,772, dated March 3, 1857.


DISCLAIMER.

Solar Camera—David A.Woodward, Baltimore, Md.Letters Patent No.16,700, dated February 24, 1857; reissue No.2,311, dated July 10, 1866.Filed February 23, 1871.


City SubscribersThe Scientific American will be delivered in every part of the city at $3.50 a year. Single copies for sale at the News-stands in this city, Brooklyn, Jersey City, and Williamsburgh, and by most of the News Dealers in the United States.


Receipts—When money is paid at the office for subscriptions, a receipt for it will be given; but when subscribers remit their money by mail, they may consider the arrival of the first paper a bona-fide acknowledgment of their funds.



The value of the Scientific American as an advertising medium cannot be over-estimated.Its circulation is ten times greater than that of any similar journal now published.It goes into all the States and Territories, and is read in all the principal libraries and reading-rooms of the world.We invite the attention of those who wish to make their business known to the annexed rates.A business man wants something more than to see his advertisement in a printed newspaper.He wants circulation.If it is worth 25 cents per line to advertise in a paper of three thousand circulation, it is worth $2.50 per line to advertise in one of thirty thousand.

RATES OF ADVERTISING.

Back Page - - - -1.00 a line,
Inside Page - - -75 cents a line,

for each insertion

Engravings may head advertisements at the same rate per line, by measurement, as the letter-press


To Manufacturers of Knitted Goods.

J

OHN KENT is now in England, completing arrangements so as to be able to supply his American friends with his improved Knitting Machines with greater dispatch, and with all the latest improvements. He would beg to call especial attention to

The Improved Rib Top Frame, now so well known, and acknowledged to be the best rib top frame ever built, for speed and quality of goods produced.Price, delivered free in New York, $520, currency.

The Improved Circular Web Frame, for drawers and shirts, built of any size and gage.Price for a 4-head set, 17 inch to 20 inch diameter, $810, currency, delivered free in New York.

The Circular Stocking Frame, from 2 in.to 5½ in.diameter.These circular frames, with my last improvements, are as near perfection as possible.

The Patent Full-fashioned Shirt, Drawers and Stocking Frames produce the most perfect goods ever made by steam-power machinery, and cost fifty per cent less to keep in repair than any other Knitting Machine.Built 10 to 24 gage, and from 30 to 140 inch wide, to order.

The Improved Circular Looping Frame, for putting on shirt cuffs, drawers bands, clearing the top of circular shirts, &c., built to order, of any size, from 2 in.to 22 in.diameter, and of any gage.

Steel Needles and Sinkers to pattern.

Persons wishing to order while Mr. Kent is in England, will please address JOHN KENT, Nottingham, up to April 12th, or, if they prefer, may send through depot.

Address

JOHN KENT, 348 Pearl st., New York.


 

PUMPS.   

—For Description, Price Lists etc., of the Best Centrifugal Pump ever invented, with Overwhelming Testimony in its favor, send for new illustrated pamphlet (40 pp.)to Messrs.HEALD, SISCO & CO., Baldwinsville, N.Y.



BRICK PRESSES.

F

OR RED AND FIRE BRICK.
Factory 309 S. Fifth street, Philadelphia, Pa. S. P. MILLER.





ST.JOSEPH, Mo., Nov.10, 1870.

T. R. BAILEY & VAIL, Lockport, N.Y.:

Gentlemen:—The Lathe you shipped me has arrived, and I have it in full operation.It works perfectly, and I think it the best lathe made in the world for Bedstead and Chair work.I would recommend it to any one desirous of obtaining such a lathe.Yours truly,

H.R.BRISTOL.


WOOLEN MILL FOR SALE.

W

ith House and 3 acres of land, Seymour, Ct., (Naugatuck Valley,) 2 miles from R.R.depot.Never-failing stream.3 ft.fall, dam and wheel in good condition.Inquire of JAS.ORMSBEE, on the premises.


Portable & Stationary

Steam Engines

A

ND HOISTING ENGINES.A good article at low prices.Every machine warranted.Send for descriptive Price List.

H.B.BIGELOW & CO.,
          New Haven, Conn.


PATENT BANDSAW MACHINES

Of the most approved kinds, of various sizes, to saw bevel as well as square, without inclining the table, by FIRST & PRYIBIL, 452 to 456 Tenth ave. , New York. Price $250, $275, $350, and $400. At present (Oct. 16), there are in operation, in this city alone, 88 of our machines. Send for circular. Manufacture, also, an improved saw-filing apparatus; price, $30. Have also on hand a large stock of best French Bandsaw Blades



L.& J.W.FEUCHTWANGER, 55 Cedar st., New York, Chemists, Manufacturers, and Importers of Specialities, Silicates, Soda and Potash, Chloride of Calcium, Peroxide of Manganese, Hydrofluoric Acid, Metallic Oxides, Steel and Glass Makers' and Potters' Articles, Publishers of Treatises on "Soluble Glass," "Gems," and "Fermented Liquors."


PIMLICO BRACES, SOMETHING NEW.

THIS invention is based on a strictly scientific principle, and is a valuable improvement on old style suspenders.It is simple in construction, and combines the qualities of Brace and Suspender.They are unequaled for elegance, durability and comfort.Manufactured at the Monumental Silk Works, Baltimore.JOHN M.DAVIES & CO., Sole Agents, 384 & 386 B'd'y, N.Y.


Dr. J.ARMSTRONG'S
(Patent)
Improved Heater, Filter, Lime Extractor, and Condenser Combined,

For Steam Boilers.

MANUFACTURED BY Armstrong & Starr, Toledo, Ohio.
Send for Circulars.

Formerly Armstrong & Welsh.


 

F

OR SALE.—An Engine, 12x36 in.cylinder, and two Boilers, 4x15 feet, in good order, will be sold cheap.
J. J. TAYLOR & CO. , 68 Courtlandt st. , New York.


 

H

UNTING, Trapping and Fishing. All about it. Sent freeAddress "Hunter," Hinsdale, N.H.


First Premium awarded by Am.Inst., 1870

MICROSCOPES,
MAGIC LANTERNS,
} Illustrated price list and catalogues
free to any address.

T. H. McALLISTER, Optician, 49 Nassau st. , N. Y.


Rare and Beautiful Flowers

—AND—

CHOICE VEGETABLES

Can always be obtained by Sowing

The Seventeenth Annual Edition of their celebrated "SEED CATALOGUE AND GUIDE TO THE FLOWER AND KITCHEN GARDEN," is now ready for distribution. It contains Four Beautifully Colored Lithographs, and about 300 choice Engravings of favorite Flowers and Vegetables, 136 pages of closely-printed matter, and a list of Twenty-five Hundred species and varieties of Flower and Vegetable Seeds, with explicit directions for their culture, and much other useful information upon the subject of Gardening.A copy will be mailed to all applicants inclosing 25 cts.Regular customers supplied gratis.Address

B.K.BLISS & SONS,

Nos.23 Park Place, and 20 Murray st., P.O.Box No.5712.New York.


Science for the Million.


THE

Boston Journal of Chemistry,

Devoted to the Science of Home Life, the Arts, Agriculture, and Medicine.

JAMES R. NICHOLS, M.D.,
WILLIAM A. ROLFE, A. M. ,
} Editors.

ONE DOLLAR PER YEAR.

A paper which commends itself at once to Physicians, Druggists, Chemists, Teachers, Farmers, Mechanics—in short, to Professional and Practical Men of every class.

The Domestic Recipes and Formulæ for Art Processes are of themselves worth many times the cost of subscription.


Specimen Copies Sent Free.

Address

BOSTON JOURNAL OF CHEMISTRY,
150 Congress st. , Boston.


FOOT LATHES,

And all kinds of small tools.Illustrated catalogue free.
GOODNOW & WIGHTMAN, 23 Cornhill, Boston, Mass.


 

A

GENTS WANTED. —To sell Stephens' Patent Combination Rule, which embraces a Rule, Level, Square, Plumb, Bevel, Slope Level, T Square, etc., in one compact tool. These instruments retail at $3.50 each, and energetic salesmen can make money by selling them among mechanics. We warrant them in every particular, as the construction and graduation is faultless. Send for descriptive circular, cuts, and terms.

STEPHENS & CO., Riverton, Conn.


 

FELT. 

THE BEST, CHEAPEST and MOST DURABLE non-conductor known, for sale by the Original Manufacturer, at the

BOILER FELTING WORKS,  
46 Courtland st. , New York.


Universal Wood Worker.

F

or Agricultural, Railroad, Car, Carriage, and Wagon Works, Planing Mill, Sash, Door and Blind, Bedstead, Cabinet and Furniture Factories.

McBETH, BENTEL & MARGEDANT, Hamilton, O.


Inventor's Exchange,

245 Broadway, N.Y.,

"Am.Agriculturist" Building
TANGIBLE INVENTIONS NEGOTIATED.

No goods received unless ordered.

B.F.KEMP, Proprietor.


 

M

ACHINISTS' TOOLS, at greatly reduced prices. Also, some Woodworth Planers and Second-hand Tools. 97 to 113 R. R. ave. , Newark, N. J.

E.& R.J.GOULD, successors to Gould Machine Co.


 

N.  B.   

PATENTED Articles introduced. Also, State and County Rights sold for Inventors. STONE, PUGH & CO. , 55 N. 6th st. , Philadelphia.


 

G

OLDEN HILL Seminary for young ladies, Bridgeport, Conn. Miss Emily Nelson, Principal.


1826USE THE VEGETABLE
PULMONARY BALSAM.
1870

The old standard remedy for Coughs, Colds, Consumption. "Nothing Better." Cutler Bros. & Co. , Boston.


 

T

HE CALVERT IRON ROLLING MILLS are offered at private sale. These mills are situated in the city of Baltimore, and cover 1½ acres of ground. The Machinery is of the most approved description, for making all sizes of round and square bar iron, from ¼ in. to 3 in. diameter, and flat bars of all widths, up to 7 inches.

The buildings are ample and commodious.

In addition to the Rolling Mills are two brick buildings (50x125 feet and 40x90 feet), now containing an 80 H.P.Engine, and Spike Machinery, but which could be used for the manufacture of Nails, Horseshoes, or any other branch of heavy hardware.

This property offers an unusual opportunity to capitalists, and will be sold at a reasonable price.

For further description address

MARSHALL  P.                    SMITH,                    
P. O. Box 1158, Baltimore, Md.


 

B

URDON IRON WORKS.—Manufacturers of Pumping Engines for Water Works, High & Low Pressure Engines, Portable Engines and Boilers, of all kinds, Sugar Mills, Screw, Lever, Drop, & Hydraulic Presses, Machinery in general.HUBBARD & WHITTAKER, 102 Front st., Brooklyn.


 

E

NGINES AND MACHINERY FOR SALE, at a great sacrifice.Two new Steam Engines, 12 and 20 horse power; 1 Faribain's Riveting Machine; 1 large Power Shears; 1 ditto Table Punch; 2 ditto Flange Punches; 1 set Power Bending Rolls; together with a large lot of Turning Lathes, Drilling Machines, Machinists' and Smiths' Hand Tools, Pulleys, Hangers, and 6 Fairbanks' Platform Scales.Send for catalogue, or apply at the South Brooklyn Steam Engine Works, cor.Imlay and Summit sts., Brooklyn.


 

S

HINGLE AND HEADING MACHINE— Law's Patent with Trevor & Co.'s Improvements.The Simplest and Best in use.Also, Shingle, Heading and Stave Jointers, Equalizers, Heading Turners, Planers etc.

      Address TREVOR & CO. , Lockport, N. Y.


 

A

GENTS WANTED—($225 A MONTH) by the AMERICAN KNITTING MACHINE CO.Boston, Mass., or St.Louis, Mo.


THE

UNITED STATES

Brick Machine

IS THE

BEST IN THE WORLD,

BECAUSE IT MAKES THE

GREATEST NUMBER,
          THE BEST, and
                    THE CHEAPEST

BRICKS.

It is the Perfection of Simplicity.

It is Durable, and not likely to get out of Repair.

See Scientific American, Sept.17, 1870.

For Descriptive Circular apply to

F.C.WELLS, President,

Room 13, 98 Madison st.,
CHICAGO.

MACHINES can be seen in operation at the Company's Works, Chicago; at rear 59 Ann st., New York city; and at Novelty Iron Works, corner of Delord and Peter sts., New Orleans.


PREPARED

Asphalte Roofing Felt.

This new prepared production is ready coated, and can be applied on the roof without further trouble. It is easy of application, and does not require any repairs for a long time. It is more durable than some slates, and has been found a suitable substitute for iron or tin roofs. It has a sanded or stony surface, which renders it UNINFLAMMABLE and FIRE-PROOF. Exposed to the most intense fire, and sparks falling upon it, it will not propagate the fire. Under the influence of the sun it will not run, which makes it specially adapted to hot climates. Its easy application and pleasing appearance have made it a favorite roofing material throughout all the Indies and other colonies. Being not cumbrous for transport, it is of invaluable service to settlers and farmers in far remote districts. When used for temporary purposes it may be taken off and applied again to another construction. It replaces common Asphalting on Terraces, Lobbies, Counting-houses, Office Floors, etc.; is a great preservative against dampness and vermin, and equalizes the temperature. It is 32 inches wide, and made in rolls of 25 yards each. Send for circular to

E.H.MARTIN,     

70 Maiden Lane and 9 Liberty St., N.Y.


J.J.H.GREGORY'S

Seed Catalogue.

My Annual Illustrated Catalogue, containing a list of many new and rare Vegetables, some of which are not found in any other catalogue, and all the standard vegetables of the farm and garden (over one hundred of which I grow on my three seed farms), with a carefully selected list of flower seed, will be sent free to all.All my seed is sold under three warrants:

  • 1st.That all money sent shall reach me.
  • 2d.That all seed ordered shall reach the purchaser.
  • 3d.That my seeds shall be fresh and true to name.

JAMES J.H.GREGORY, Marblehead, Mass.


THE NEW WILSON

AGENTS WANTED.

Under-Feed Shuttle
SEWING MACHINES!

$25 cheaper than any other!

For Simplicity, Durability and Beauty they stand unrivalled! For Stitching, Hemming, Tucking, Felling, Quilting, Cording, Binding, Braiding, Gathering, Gathering & sewing on gathers, they are unexcelled! For particulars address

Wilson Sewing Machine Co. ,
Cleveland, O. , or
St. Louis, Mo.



 

MACHINERY, 

NEW and 2d-HAND.
Send for Circular. ChasPLACE
& CO. , 60 Vesey st. , New York.


MACHINISTS.

Illustrated Catalogue and Price List of all kinds of small Tools and Materials sent free to any address.GOODNOW & WIGHTMAN, 23 Cornhill, Boston, Mass.


P.BLAISDELL & CO.

 

M

ANUFACTURERS of the "BLAISDELL" PATENT DRILL PRESSES, with quick return motion, Agricultural Drills, Improved Engine Lathes, from 12 in. to 28 in. swing, Planers, Gear Cutters, Boring Mills, Hand Lathes, and other first-class Machinists' Tools.

Jackson st., Worcester, Mass.



Patent

BEDSTEAD FASTENING.

The Best, Cheapest, and Strongest FASTENING ever invented.

Rights for States and Territories for sale.

Address

JOHN DOMINGOS     
and                     BENJAMIN ESSIG,
Sacramento, Cal.


 

B

ENT, GOODNOW & CO.,

Boston, Mass. , Publishers of "PATENT STAR", sell Patent Rights and goods of all kinds.Orders solicited.

AGENTS WANTED.


Send stamp for copy.



TO THE WORKING CLASS. —We are now prepared to furnish all classes with constant employment at home, the whole of the time or for the spare moments. Business new, light and profitable. Persons of either sex easily earn from 50c. to $5 per evening, and a proportional sum by devoting their whole time to the business. Boys and girls earn nearly as much as men. That all who see this notice may send their address, and test the business, we make this unparalleled offer: To such as are not well satisfied, we will send $1 to pay for the trouble of writing. Full particulars, a valuable sample which will do to commence work on, and a copy of The People's Literary Companion—one of the largest and best family newspapers published—all sent free by mail.Reader, if you want permanent, profitable work, address

D.C.ALLEN & CO., Augusta, Maine.


IMPORTANT

 

T

O  MACHINISTS. —The Best Metal for all Machine Uses is the MARTIN STEEL, made by The New Jersey Steel and Iron Co, Trenton, N.J.This steel is made by an entirely different process from any other and is tougher than wrought iron.It can be turned without annealing, being entirely free from hard spots.Every one who uses it pronounces it just what they have long wanted, for a multitude of uses, such as Crank Pins, Lathe Spindles and Screws, Cotton Machinery Rollers, Saw and Fan Spindles, etc., etc. Also, particularly adapted for Firebox Plates.Prices low.Send for further information, or a sample, stating use to which it is to be applied.


 

OTIS'  

SAFETY HOISTING
Machinery.

OTIS, BROS.& CO.     
No.           309 BROADWAY, NEW YORK.                     


Union Emery Wheels.

Solid and with Stone Center.UNION STONE CO., Boston, Mass.Branch Office, 93 Liberty st., N.Y.General Agents for the Am.Twist Drill Co.'s Superior Grinder and other Emery Wheel Machinery and Tools.Send for Circular.


WOODBURY'S PATENT

Planing and Matching

and Molding Machines, Gray & Wood's Planers, Self-oiling Saw Arbors, and other wood working machinery.

S. A. WOODS,
Send for Circulars.
} 91 Liberty street, N. Y. ;
67 Sudbury street, Boston.

 

R

ICHARDSON, MERIAM & CO.,
Manufacturers of the latest improved Patent Daniels' and Woodworth Planing Machines, Matching, Sash, and molding, Tenoning, Mortising, Boring, Shaping, Vertical, and Circular Re-sawing Machines, Saw Mills Saw Arbors, Scroll Saws, Railway, Cut-off, and Rip-saw Machines, Spoke and Wood Turning Lathes, and various other kinds of Wood-working Machinery. Catalogues and price lists sent on application. Manufactory, Worcester, Mass.

Warehouse, 107 Liberty st., New York.17 1



Reynolds'

TURBINE WATER WHEELS.

The Oldest and Newest.All others only imitations of each other in their strife after complications to confuse the public.We do not boast but quietly excel them all in staunch reliable, economical power.Beautiful pamphlet free.

GeoTALLCOT,
96 Liberty st. , New York.
Gearing, Shafting.     


Niagara Steam Pump.

CHAS.B.HARDICK,

Adams st. , Brooklyn, N. Y.


 

M

ODELS, PATTERNS, EXPERIMENTAL, and other machinery, Models for the Patent Office, built to order by HOLSKE MACHINE CO. , Nos. 528, 530, and 532 Water st. , near Jefferson. Refer to Scientific American office. 14 tf


1832.

SCHENCK'S PATENT.

1870.

Woodworth Planers.

And Re-Sawing Machines, Wood and Iron Working Machinery, Engines, Boilers, etc. JOHN B. SCHENCK & SON, Matteawan, N. Y. , and 118 Liberty st. , New York.



ANTED—AGENTS, $20 PER DAY, TO sell the celebrated HOME SHUTTLE SEWING MACHINE.Has the under-feed, makes the "lock stitch" alike on both sides, and is fully licensed.The best and cheapest Family Sewing Machine in the market.Address

JOHNSON, CLARK & CO. ,

Boston, Mass. ; Pittsburgh, Pa. ; Chicago, Ill. , or St. Louis, Mo.


Milling Machine,

 

I

NDEX, STANDARD, UNIVERSAL, AND HORIZONTAL. —The largest variety to be found in the country, on hand and finishing. Workmanship, Material, and Design unsurpassed. Machines on exhibition at Fair of American Institute. UNION VISE CO. OF BOSTON. Office 80 Milk st. Works at Hyde Park, Mass.


Andrew's Patents.

Noiseless, Friction Grooved, Portable, and Warehouse Hoisters.

Friction or Geared Mining & Quarry Hoisters. Smoke-burning Safety Boilers.

Oscillating Engines, Double and Single, 1-2 to 100-Horse power.

Centrifugal Pumps, 100 to 100,000 Gallons per Minute, Best Pumps in the World, pass Mud, Sand, Gravel, Coal, Grain, etc., without injury.

All Light, Simple, Durable, and Economical.

Send for Circulars.

WM. D. ANDREWS & BRO. ,
414 Water street, New York.


 

$150 

A MONTH! EMPLOYMENT! EXTRA INDUCEMENTS! A premium Horse and Wagon for Agents. We desire to employ agents for a term of seven years, to sell the Buckeye $20.00 Shuttle Sewing Machine. It makes a stitch alike on both sides, and is the best low-priced licensed machine in the world. W. A. HENDERSON & CO. , Cleveland, Ohio, or St. Louis, Mo.


 

A

LLCOTT'S LATHES, for Broom, Hoe, and
 Rake Handles, for sale by

L. W. POND, 98 Liberty st. , New York.


 

U

NRIVALLED Hand Saw Mill, Self-feeding, with ease. Rip 3-in. lumber; guaranteed do work of 3 men. The only hand saw machine known, does as represented. Thousands in use. Send for circular.

WM. H. HOAG, Sole Manufacturer, 214 Pearl st. N. Y.



Best in the World—$290. Sent on trial—See large cut and terms in Scientific American. Oct. 1st 1870.


Dovetailing Machine.

 

W

ILL MAKE 400 DRAWERS PER DAY. See Scientific American, Jan.11, '71.H.H.EVARTS, 93 Liberty st.; TREVOR & CO., Lockport N.Y.


CIRCULAR SAW MILLS.

 

H

AYS & NEWMAN'S PATENT DOUBLE PARALLEL EDGERS, FOSTER'S PATENT LOG-CANTING MACHINES, and Sawmill Machinery generally, manufactured by the Washington Mowing Machine Company.

LEROY MOWRY, Agent,
Sandy Hill, Wash. Co. , N. Y.

Send for Illustrated Circulars and Price Lists.


To Electro-Platers.

 

B

ATTERIES, CHEMICALS, AND MATERIALS, in sets or single, with books of instruction, manufactured and sold by THOMAS HALL, Manufacturing Electrician, 19 Bromfield street, Boston, Mass. Illustrated catalogue sent free on application.


 

P

RIZE MEDAL SCROLL SAW.

THOS.L.CORNELL, Derby, Conn.


PATENT RIGHTS SOLD ON COMMISSION.

By E.E.ROBERTS & CO., Consulting Engineers, 15 Wall St., N.Y.

Send Stamp for Circular.


Newspaper Advertising.

A Book of 125 closely printed pages, lately issued, contains a list of the best American Advertising Mediums giving the names, circulations, and full particulars concerning the leading Daily and Weekly Political and Family Newspapers, together with all those having large circulations, published in the interest of Religion, Agriculture, Literature, etc., etc. Every Advertiser, and every person who contemplates becoming such, will find this book of great value.Mailed free to any address on receipt of 25c.

GEO.P.ROWELL & CO.,

Publishers, No.40 Park Row, New York.

The Pittsburgh (Pa.)Leader, in its issue of May 29, 1870 says:

"The firm of G. P. Rowell & Co. , which issues this interesting and valuable book, is the largest and best Advertising Agency in the United States, and we can cheerfully recommend it to the attention of those who desire to advertise their business SCIENTIFICALLY and SYSTEMATICALLY in such a way: that is, so as to secure the largest amount of publicity for the least expenditure of money."


THE CELEBRATED

Cold-rolled Shafting.

 

T

his Shafting is in every particular superior to any turned Shafting ever made. It is the most ECONOMICAL SHAFTING to buy, being so very much stronger than turned Shafting. Less diameter answers every purpose, causing a great saving in coupling, pulleys and hangers. It is perfectly round, and made to Whitworth Gage. All who give it a trial continue to use it exclusively. We have it in large quantities. Call and examine it, or send for price list.

Address

GEORGE PLACE & CO. ,
126 and 128 Chambers st. , New York.


N.Y.Machinery Depot.

 

G

EORGE PLACE & CO. , Manufacturers and Dealers in Wood and Iron Working Machinery, of every description, Stationary and Portable Engines and Boilers, Leather and Rubber Belting, and all articles needful in Machine or Railroad Repair Shops. 126 and 128 Chamber st. , New York.


Sturtevant Blowers.

 

T

hese are in every particular the best and most perfect Blower ever made. A full assortment of every size on hand, ready to deliver.

Address

GEORGE PLACE & CO. , 126 and 128 Chamber St. , New York.



 

T

he Union Iron Mills, Pittsburgh, Pa. The attention of Engineers and Architects is called to our improved Wrought-iron Beams and Girders (patented), in which the compound welds between the stem and flanges, which have proved so objectionable in the old mode of manufacturing, are entirely avoided, we are prepared to furnish all sizes at terms as favorable as can be obtained elsewhere. For descriptive lithograph address

Carnegie, Kloman & Co. , Union Iron Mills, Pittsburgh, Pa.


 

M

ILL OWNERS, ATTENTION. —Our Turbine Water Wheels still ahead. No complications. Simple, compact, and durable. Prices moderate.

VALENTINE & CO., Ft.Edward, N.Y.


 

T

HE WOODWARD STEAM-PUMP MANUFACTURING COMPANY, Manufacturers of the Woodward Pat. Improved Safety Steam Pump and Fire Engine, Steam, Water, and Gas Fittings of all kinds. Also Dealers in Wrought-iron Pipe, Boiler Tubes, etc. Hotels, Churches, Factories, & Public Buildings heated by Steam. Low Pressure. Woodward Building, 76 and 78 Center st. , cor. of Worth st. (formerly of 77 Beekman st. , N. Y.) All parties are hereby cautioned against infringing the Pat. Right of the above Pump. G. M. WOODWARD, Pres't.


 

B

UERK'S WATCHMAN'S TIME DETECTOR. —Important for all large Corporations and Manufacturing concerns—capable of controlling with the utmost accuracy the motion of a watchman or patrolman, as the same reaches different stations of his beat. Send for a Circular.

J.      E.      BUERK,     
P. O. Box 1,057 Boston, Mass.

N.B.—This detector is covered by two U.S.Patents.Parties using or selling these instruments without authority from me will be dealt with according to law.


 

P

ORTABLE STEAM ENGINES, COMBINING the maximum of efficiency, durability and economy, with the minimum of weight and price. They are widely and favorably known, more than 750 being in use. All warranted satisfactory or no sale. Descriptive circulars sent on application. Address

J. C. HOADLEY & CO. , Lawrence, Mass. 46. Cortlandt st. , New York.


 

$5 TO $10 PER DAY.  

MEN, WOMEN, BOYS and GIRLS who engage in our new business make from $5 to $10 per day in their own localities. Full particulars and instructions sent free by mail. Those in need of permanent, profitable work, should address at once. George Stinson & Co, Portland, Maine.


Agents!Read This!

 

W

E WILL PAY AGENTS A SALARY OF $30 per week and expenses, or allow a large commission, to sell our new and wonderful inventions.

Address

M. WAGNER & CO. , Marshall, Mich.





EPILEPSY OR FITS.

A sure cure for this distressing complaint is now made known in a Treatise of 48 octavo pages, on Foreign and Native Herbal Preparations, published by Dr. O. Phelps Brown. The prescription was discovered by him in such a providential manner that he cannot conscientiously refuse to make it known, as it has cured everybody who has used it for Fits, never having failed in a single case. The ingredients may be obtained from any druggist. Persons desiring a copy may address Dr. O. Phelps Brown, No. 21 Grand Street, Jersey City, N. J. , and it will be sent by return mail.


 

W

OOD-WORKING MACHINERY GENERALLY. Specialties, Woodworth Planers and Richardson's Patent Improved Tenon Machines. Nos. 24 and 26 Central, corner Union st. , Worcester, Mass. Warerooms 42 Cortlandt st. , New York.

WITHERBY RUGG, & RICHARDSON.


 

C

INCINNATI BRASS WORKS. —Engineers and Steam Fitters' Brass Work, Best Quality at very Low Prices.

F. LUNKENHEIMER, Prop'r.


Hinkley Knitting Machine.

 

T

he simplest, cheapest, and best in use.
Has but one needle! A child can run it!

Agents Wanted in Every Town.

Send for Circular and Sample Stocking to

HINKLEY KNITTING MACHINE CO., Bath, Me.


 

L

ATHE CHUCKS—HORTON'S PATENT

from 4 to 36 inches.Also for car wheels.Address

E.HORTON & SON, Windsor Locks, Conn.


 

S

ILICATE OF SODA, IN ITS VARIOUS forms, manufactured as a specialty, by Philadelphia Quartz Co. , 783 South 2d st. Philadelphia, Pa.



Advertisements will be admitted on this page at the rate of $1.00 per line for each insertion. Engravings may head advertisements at the same rate per line, by measurement, as the letter-press.


An Important Fact.

MARVIN & CO.'S

SPHERICAL SAFES

Have never been Robbed.

Hundreds are in use by Banks, Bankers, and Merchants.


Warehouses,
{
265 Broadway, New York.
721 Chestnut st. , Philadelphia.
108 Bank st. , Cleveland.
93 Main st. , Buffalo.


L: L: SMITH & CO.,

Nickel Platers,

6 HOWARD ST., New York,
Between Elm and Centre.


SAVE YOUR FUEL.

THE ORIGINAL L.B.TUPPER'S

Furnace Grate Bar.

Guaranteed to make from 5 to 10 lbs. more steam, with less fuel, than any other bar. Adapted to all kinds of fuel; no alteration of furnace required. Received Silver Medal at Cincinnati Industrial Exposition, 1870; Silver Medal at Worcester Co. Mechanics' Association, 1866; Medal and Diploma at American Institute Fair, 1870; Honorable Mention at Paris Exposition. Send for descriptive pamphlet. Now in use in 10,000 places.

L.B.TUPPER, 120 West st., New York.


Pyrometers.

 

F

or Blast Furnaces, Bakers' Ovens, Boiler Flues, Superheated Steam Oil Stills, Zinc and Lead Baths.

E. BROWN, 311 Walnut st. , Philadelphia.


Agents Wanted.

 

T

o sell the UNIVERSAL SASH LOCK.
It is Self-Acting and Burglar-Proof. Send stamp for circulars. Carpenters and Builders can make from $10 to $20 selling them. Address G. S. LACEY, care of Patterson Brothers, No. 27 Park Row, New York city.


 

S

PERM OIL, strictly pure, for SEWING MACHINES and fine Machinery, in bottles and bbls.Sample by mail, 25 cts.W.F.NYE, New Bedford, Mass.


The Reasons Why

 

D

OOLEY'S YEAST POWDER is preferred to any other Baking Powder in market, are owing to its perfect purity, quality, quantity, and economy. The ingredients are strictly free from deleterious substances, and hence the full strength of each is obtained, and the results are uniform every time it is used. This cannot be the case in those of ordinary manufacture, and for proof of our assertion, we ask those who have never used Dooley's Yeast Powder to give it a trial. Your grocer keeps it. DOOLEY & BROTHER, Manufacturers, 69 New st. , New York.


 

P

ATENT CUTTERS for the Teeth of Gear Wheels, which can be sharpened by grinding, without changing their form. Cutters made on this plan will last many times as long as those of the common form, with the advantage of being always ready for use. Descriptive circular, with price list, sent per mail on application. BROWN & SHARPE M'F'G CO. , Providence, R. I.


A SPRING OF WATER AT THE TOP OF THE HOUSE.

 

H

OUGHTON'S AUTOMATIC WATER ELEVATOR, patented Feb. 7, 1871, No. 111,542, delivers water from the well or cistern in the tank at the top of the house. Is operated by the fire in the kitchen range without additional fuel; is simple in construction, reliable and cheap. Reliable parties wanted to introduce them into use in all the States except New England. For drawings and full description address

CHARLES HOUGHTON, 41 State St., Boston, Mass.


 

S

HORT HAND. —150 words per minute in four weeks. Send stamp for Circular.

ProfGRAY, P.O.Box 4847, New York.


WATCHES THAT ARE WATCHES.

We shall be pleased to send our DESCRIPTIVE PRICE LIST of Genuine WALTHAM WATCHES, together with an Illustrated pamphlet entitled a History of Watchmaking, to all who send us their address.No matter how remote you are from New York, we can sell you a Watch at the same price as if you were here.When you write mention that you saw this notice in the Scientific Amer.

HOWARD & CO., 865 Broadway, N.Y.


Engines, Tools, Machinery, etc.,

FOR SALE AT THE

Novelty Iron Works,

Foot of East 12th street, New York city,

 

E

MBRACING Engines, Planers, Lathes, Smith and Boiler Makers' Tools, and Machinery and Patterns of the most approved kinds, etc. Also, 1 High Pressure Engine, 12-inch diameter by 30-inch stroke: 2 Stevenson's Patent Turbine Water Wheels, 66-inch diameter, and 1 Marine Beam Engine, 60-inches by 10-feet stroke. Send for catalogue.

JNO.S.SCHULTZE,

RECEIVER OF THE NOVELTY IRON WORKS.
New York, March 1, 1871.


 

F

OR CIRCULAR ILLUSTRATING A NEW and greatly improved TURBINE WHEEL, believed to be the best and cheapest in the market, apply to

PUSEY JONES & CO.      ,     
Wilmington Delaware


 

H

OTCHKISS BRICK AND TILE MACHINE. —Send for Circular to Room 7, No. 19 Cliff street, New York.


PRATT'S Astral OIL:

Not the cheapest, but the best Illuminating Oil ever made. Does not take fire or explode if the lamp be upset or broken. Over 100,000 families continue to use it, and no accidents of any description, directly or indirectly, have occurred from it.

Oil House of Charles Pratt,
Established 1770, New York.



UNION

Spoke Works.

 

S

POKES, RIMS, AND PLOW HANDLES. All goods warranted seasoned, and of the best quality.

JOHN G.      DAVIS & SON,     
Southwest cor. of Leopard and Otter sts. , Philadelphia.


Vertical & Horizontal CORN MILLS. 30-inch grinds 30 bus. per hour, and 20-in. 15. Price $280 and $140.

EDWARD HARRISON,     
New Haven, Conn.



IRON STEAMSHIP BUILDERS.

NEAFIE & LEVY,

PENN WORKS,

MARINE ENGINES, BOILERS, ETC.,
PHILADELPHIA, PA.


Swain Turbine.


"Our Low-Water Wheel from this on"

 

W

ILL DO TEN PER CENT MORE WORK on small streams, in a dry season, than any wheel ever invented. Gave the best results, in every respect, at the Lowell Tests.

For Report of tests at Lowell, with Diagrams and Tables of Power, address

THE SWAIN TURBINE CO.,     
North Chelmsford, Mass.


UILDING PAPER

OF THREE GRADES.

TARRED SHEATHING,

For outside of Studding, under Clapboards. A non-conductor of cold, heat, and dampness.

PREPARED PLASTERING BOARD,

a cheap and perfect substitute for lath and plaster; makes a smooth, warm, and substantial wall, at less than half the usual cost.

DOUBLE THICK ROOFING

and Quartz Cement, make a good water and fire-proof roof, for less than $3.50 per square.

     Sample and Circulars sent free, by ROCK RIVER PAPER CO.           ,     
Chicago; or,

B.      E.      HALE,     
22 & 24 Frankfort street, N. Y.


 

I

RON PLANERS, ENGINE LATHES, Drills, and other Machinists' Tools, of superior quality, on hand, and finishing. For sale low. For Description and Price address NEW HAVEN MANUFACTURING CO. New Haven Conn.


RUMPFF & LUTZ,

 

I

MPORTERS and Manufacturers of Aniline Colors and Dyestuffs, Colors for Paperhangers and Stainers. Reliable recipes for Dyeing and Printing on Silk, Wool, and Cotton. All new improvements in the art of Dyeing, and new Colors are transmitted to us by our friends in Europe, as soon as they appear.

42 Beaver street, New York.


PAGE'S

Patent Tanned Belting

Runs 25 per cent more machinery, is nearly twice as strong, and wears 50 per c. longer than any other. Send for circular containing price lists and discounts.

Page Brothers, Sole Manuf'rs, Franklin, N.H.



From 4 to 500 horse power including Corliss Engines, Slide Valve Stationary Engines, Portable Engines, etc. Also, Circular Saw Mills, Shafting, Pulleys etc. Wheat and Corn Mills, Circular Saws, etc.
Send for Price List.

WOOD & MANN
Steam Engine Company,
WORKS—UTICA, N. Y.

Principal Office42 Cortlandt st., New York.


DIAMOND POINTED

STEAM DRILLS.

 

F

OR ALL KINDS OF ROCK DRILLING, Mining, Quarrying, Tunneling, Railroad Grading, Well Boring, Prospecting, etc. Fifty to Seventy-five per cent of cost and time of hand labor saved. "Test Cores," in form of solid cylinders of rock or mineral taken out of mines from any depth not exceeding one thousand feet, showing true value, stratification, etc. No percussion. Never require sharpening. FIRST PREMIUMS awarded in both American and Europe. Illustrated Circulars sent on application. Beware of infringements.

SEVERANCE & HOLT,
Proprietors and Manufacturers,
Office 16 Wall st. , New York.


NICKEL PLATING.

Beardslee Nickel and Manufacturing Co.,
82 and 84 Fulton St. , Brooklyn, N. Y.

 

R

IGHTS sold for the use of, and instruction given in the best method of Nickel Plating. An experience of twelve years enables us to offer a solution and apparatus that remain practically unchanged for years, in constant use.

FIRST PREMIUM AWARDED
us by the American Institute in 1870. Critical examination of our work solicited. All goods sent to our Factory will meet with prompt attention.

New York Office—4 Dev st., Room 2.




Agents wanted.

 

B

EST DAMPER REGULATOR for Steam Boiler. Send for Circulars.

MURRILL & KEIZER, Baltimore, Md.


 

P

AT. SOLID EMERY WHEELS AND OIL STONES, for Brass and Iron Work, Saw Mills, and Edge Tools. Northampton Emery Wheel Co. , Leeds, Mass.


No

LIVE MECHANIC

Can afford to be without some of

BAIRD'S

FOR PRACTICAL MEN.

My new and enlarged Catalogue of PRACTICAL AND SCIENTIFIC BOOKS, 82 pages, 8vo., will be sent, free of postage, to any one who will favor me with his address.

HENRY CAREY BAIRD,
Industrial Publisher, 406 Walnut St. ,
Philadelphia


THE FIFTH GRAND STATE FAIR

OF THE

Mechanics and Agricultural State Association of Louisiana

 

W

ill be held on the Fair Grounds of the Association, in the city of New Orleans, commencing Saturday, April 8, 1871, and continuing nine days. Exhibitors are invited from every section of America. Railroads, steamships, and other transportation lines, as named in the Premium Catalogues, will carry exhibitors and their wares to and from the Fair at one half the usual rates. For further information see Premium Catalogue, which will be sent to any address free of charge.

LUTHER HOMES, Secretary and Treasurer, New Orleans, La.




WIRE ROPE.

JOHN A.ROEBLING'S SONS,

MANUFACTURERS, TRENTON, N.J.

 

F

or Inclined Planes, Standing Ship Rigging, Bridges, Ferries, Stays, or Guys on Derricks & Cranes, Tiller Ropes, Sash Cords of Copper and Iron, Lightning Conductors of Copper. Special attention given to hoisting rope of all kinds for Mines and Elevators. Apply for circular, giving price and other information. Send for pamphlet on Transmission of Power by Wire Ropes. A large stock constantly on hand at New York Warehouse,

No. 117 Liberty street.


$732 IN 31 DAYS,

 

M

ade by one Agent, selling Silver's Broom. 100,000 in use. Recommended by Horace Greeley and Am.Agriculturist. One county for each Agent. Prices ReducedC.A.CLEGG & CO., New York, or Chicago, Ill.


American Saw Co., Manufacturers of

And Perforated Circular and Long Saws.Also Solid Saws of all kinds.No.1 Ferry St., cor.Gold street, New York.Branch Office for Pacific Coast, No.606 Front street, San Francisco, Cal.


MACHINE SCREWS,

 

F

or all purposes, with square, round, and hexagon heads. A. W. GIFFORD & CO. , Worcester, Mass.


The fact that this Shafting has 75 per cent greater strength, a finer finish, and is truer to gage, than any other in use, renders it undoubtedly the most economical. We are also the sole manufacturers of the Celebrated Collins Pat.Coupling, and furnish Pulleys, Hangers, etc., of the most approved styles.Price Lists mailed on application to

JONES & LAUGHLINS,     
120 Water street, Pittsburgh, Pa.


Stocks of this Shafting in store and for sale by
FULLER, DANA & FITZ, Boston, Mass.
GEO. PLACE & CO. , 126 Chambers street, N. Y.



Steam Super-Heater,

 

F

or Saving Fuel, and supplying Dry Steam of any desired temperature. Safe, durable, easily attached. H. W. BULKLEY Engineer, 98 Liberty st. , N. Y.


 

F

OR CIRCULAR OF TREMPER'S PATENT VARIABLE CUT-OFF, for high and low pressure Steam Engines, address

PUSEY JONES & CO.Wilmington Delaware.


Harrison    Safety    Boiler.

First-class Medal, World's Fair, London, 1862.And American Institute Fair, New York, 1869.

Over 1,000 Boilers in Use.

Weston's Patent Differential

PULLEY BLOCKS.

75,000 IN USE.

Address

HARRISON BOILER WORKS,
Philadelphia, Pa.

or, JOHN A.COLEMAN, Agent,     
110 Broadway, New York, and 139 Federal st. , Boston.


DOYLE'S

PATENT DIFFERENTIAL

Pulley Blocks,

The celebrated Doyle Blocks have taken premiums over the differential Blocks of all other makers at every Fair where they have been exhibited at the same time. When you buy, see that the Blocks are marked J. J. DOYLE. Pat. Jan. 8, 1861. All others are infringements.

SAMUEL HALL'S SON & CO. ,
SOLE MANUFACTURERS.
229 West 10th street, New York.


 

HEAVY CASTINGS  

For Forge and
Mill Work. The M. & T. SAULT CO. Steam Engine Builders & Founders, New Haven, Conn.


EMPLOYMENT.

 

$250 

A MONTH with Stencil Dies.
Samples free. Address

S.M.SPENCER Brattleboro Vt.


THE

Tanite Emery Wheel.

Does not Glaze, Gum, Heat, or Smell. Address

THE TANITE CO. ,

Stroudsburg, Monroe Co. , Pa.


 

A.

S. & J. GEAR & CO. , Boston, furnish every description of Wood and Iron Working Machinery and Supplies. The best in use, regardless of maker, at lowest possible rates.


Working Models

And Experimental Machinery, Metal, or Wood, made to order, by

J. F. WERNER 62 Center st. N. Y.


 

M

cNAB & HARLAN, Manufacturers of Wrought Iron Pipe and Fittings, Brass Cocks, Valves, Gage Cocks, Whistles, Water Gages, and Oil Cups, Harlin's Patent Lubricator, Plumber's Brass Work, Getty's Patent Pipe Cutter, Getty's Patent Proving Pump and Gage. No. 86 John st. , New York.


THE

Allen Engine Works,

Fourth avenue and 130th and 131st sts., New York city Manufacturers of

  • Porter's Governor,
  • The Allen Boiler, and
  • Standard Straight Edges, Surface Plates, and
  • Angle Plates.

Four first premiums were awarded to us at the Fair of the American Institute, 1870.

Send for our illustrated circular.


L.W.Pond—New Tools.

EXTRA HEAVY AND IMPROVED PATTERNS.

 

L

ATHES, PLANERS, DRILLS, of all sizes; Vertical Boring Mills, ten feet swing, and under; Milling Machines, Gear and Bolt Cutters; Hand Punches and Shears for Iron.

Office and Warerooms, 98 Liberty st., New York; Works at Worcester, Mass.

A.C.STEBBINS, New York, Agent.


WATER-PROOF

BUILDING PAPER

(No Tar), for Roofing, Sheathing, Ceilings, Oil-cloths, Shoe Stiffenings, Tags, Trunks, Cartridges, Blasting, Pass-book Covers, Grain and Flour Bins, etc., for sale by

J. HUNTER, Jr,

Paper Warehouse, 59 Duane st. , New York.


Scientific American

For 1871.

TWENTY-SIXTH YEAR.

 

E

VERY NUMBER is printed on fine paper, and elegantly illustrated with original engravings representing

New Inventions, Novelties in Mechanics,
Manufactures, Chemistry, Photography,
Architecture. Agriculture.
Engineering, Science,
and Art.

Farmers, Mechanics, Inventors, Engineers, Chemists Manufacturers and People of all Professions or Trades will find the

SCIENTIFIC AMERICAN

of great value and interest.

The Editors are assisted by many of the ablest American and European Writers, and having access to all the leading Scientific and Mechanical Journals of the world, the columns of the Scientific American are constantly enriched with the choicest Information.

An Official List of all the Patents Issued is published Weekly.

The Yearly Numbers of the Scientific American make two splendid Volumes of nearly One Thousand Pages equivalent in size to FOUR THOUSAND ordinary book pages.

SPECIMEN COPIES SENT FREE.

Terms—$3.00 a year, $1.50 half year; Clubs of Ten Copies for one year, at $2.50 each, $25.00,

With a SPLENDID PREMIUM to the person who forms the Club, consisting of a copy of the celebrated Steel Plate Engraving, "Men of Progress."

Address

                    MUNN & CO.                    ,

Publishers of the Scientific American.
37 Park Row, New York.     


 

T

HE "Scientific American" is printed with CHAS.ENEU JOHNSON & CO.'S INK. Tenth and Lombard sts. Philadelphia, and 59 Gold st. New York.