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GUTZLAFF'S CHINESE MAGAZINE, VOL. !, In the European process, sulphuric acid of this, the praiseworthy researches of was for a long time made use of to effect this worthy inheritor of a distinguished the saccharification, and it is only within name, do not appear to have led to any these few years that it has been disco, important results. He concludes his vered that germinated barley would pro- essay thus" From the extracts that I duce the same result. This simple mo- have given from several Chinese works, dification has produced a very great

it will be seen that in the seventeenth saving in the manufacture, which is now century, at the period when the mission. taking an immense development by the ary establishments were fourishing in mixture of syrups of starch with the China, a judicious selection of articles molasses of commerce, and other appli, from these works would have propagated cations. All this process was pointed out useful ideas in Europe, and the discoin the Chinese encyclopedias, which I very of some processes of industry might have already mentioned."

“ With

have been advanced by more than half a regard to agriculture, it is from China century” (this refers to some improvethat we have received the sowing-ma- ments in the smelting of metals). chines, which have been known there these works are now too old in a technofrom a remote antiquity.” It was to logical point of view, since they date make other discoveries of this kind that back two centuries and a half, and we Mr. Edward Biot applied himself to should hope that the spirit of invention study the Chinese encyclopedias which and detail, which has produced among exist in the Royal Library of Paris, the Chinese so many important discowhere there is a superior collection to veries, has not been stifled by their politithat in the British Museum, including cal system. With vegard to the developespecially the celebrated work of Ma- ment that the sciences might have taken twan-lin, of which we regret to say there amongst them, no hopes can be enterappears to be as yet no copy in this tained by those who have perused their country. The Japanese Cyclopedia, to modern works in astronomy, such as the which we gave much attention, is, how- Hwan-tëen-too-shwo, or “ Description of ever, merely an improved edition of the the Celestial Sphere," a work published San - Tsae - Too - H wuy, or Collection in 1820 at Canton, under the inspection of Pictures of the Three Elements" of the Viceroy, and in which astronomy (=it) i. e. heaven, earth, and man; takes a retrograde mareh further back

than the knowledge attained at the time which is to he found at the Museum, or of Ptolemy. The only instrument mella may be bought at Mr. Allen's, in Leaden- tioned in it is the gnomon of stone which hall-street, in 63 vols. large 8vo. in six was employed in the infancy of astro, cases, for 251.

This work, which is nomy. But new works on the arts of tolerably complete, including, for instance, China would, without any doubt, have under the head of architecture, represen- given us useful bints on the modern matations of every kind of building, from a nufacture of gongs, of Chinese paper, palace to a pig-stye, and giving instruc- of colours, and of other objects which tions even in boxing, with representations I cannot here enumerate." These new of the Chinese“ fancy” in their different works would, it appears, in vain bę attitudes of " comivg to the scratch,” is, sought for at Paris, but there does not in our humble opinion, by no ineans the seem to be any difficulty in procuring, work to he chosen for a purpose like Mr. them at Canton, and it is there that they Bioi's. The letter-press is nearly ba. might best be translated. Mr. Biot menJanced in quantity by the plates (which tions a supplement to the great work of are by no means of the very best kind), Ma-tuan-lin, bringing it up to a recent and relying on this, the descriptions have period, which it must be owned was hy no. been made too brief and cursory to aid means unnecessary, when we consider ihat research. In fact, Mr. Biot himself ob- the original author flourished in the be. serves, that “the expressions empoyed ginning of the 13th century, at the time are ofien very vague, and the indications The Mongol Tartars conquered China and given by the text are rather sufficient to Russia. There could not be a more vaenable me to recognise a process since Juable present made to the literature of discovered in Europe than to pursue it Europe than a translation of this great from the description." In consequence work and its supplement; and if this

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JONES' SPARK-ARRESTER.

183

Number of the Mechanics! · Magazine should ever meet Mr. Gutzlaff's eye, we would earnestly press on his attention the power he possesses of immortalising his name by a work of such colossal interest and utility.

In the mean time, in spite of all our deference for our learued brother-reviewer in China, we cannot help saying to the magazine, “ Go on and prosper.

receptacle is a pipe, extending downward into the smoke-chamber at the end of the boiler, and below the part immediately con nected with the boiler. Through this pipe the sparks pass, and fall into the bottom of the smoke.chamber. It is supposed by Mr. Jones, that the impetus of the steam, escaping from the engine through the smoke-pipe, produces a partial vacuum in the bottom of the smoke-chamber, and causes a portion of air to rush down the said pipe, which makes the sparks more readily descend to a place where they are beyond the influence of the escaping current of smoke and steam, there to be consumed.

4. The gauze-cap is made with hingejoints, so as to be thrown over · backward when the engine is not under way. This contrivance serves the double purpose of preventing the gauze from being clogged with lamp-black, by the thick smoke escaping be, fore the starting of the engine; and of facili, tating the cleansing of the gauze, by a brush applied to its inner surface, where the smoke and lamp- black condenses.

It is the opinion of the Committee that each of the foregoing features is productive of advantage. Hence, they are of opinion, that Mr. Jones' apparatus is among the best that has been devised ; an opinion which is confirmed by the respectable testimony which has been adduced.

There is a suitable apparatus for arresting the sparks when the engine is going backward, which it is deemed unnecessary here to describe.—By order of the Committee,

William HAMILTON, Actuary. Jan. 14, 1836.

JONES' SPARK-ARRESTER. (From the Journal of the Franklin Institute.)

The Committee on Science and the Arts, constituted by the Franklin Institute of the State of Pennsylvania for the Promotion of the Mechanic Arts, to whom was referred for examination an apparatus for stopping the sparks from the flues of locomotive-engines, invented by Mr. Alfred C. Jones, of Portsmouth, Virginia, report :-

That it has for some time been considered a desideratum to devise a plan by which the sparks escaping from the chimney, or smokepipe, of a locomotive-engine, may be arrested, so as to ensure both the comfort of passengers and the safety of goods transported on railroads. The rapid extension of this mode of conveyance is every day rendering this object of increased importance. Judging from the certificates of engineers and others, exhibited by Mr. Jones, it may be inferred that he has been more successful in relation to it than preceding inventors.

The priacipal peculiarities of Mr. Jones' invention are the following:

1. A projection, and funnel-shaped opening, in the front part of the wire-gauze, which surmounts the smoke-pipe. This opening is for the purpose of admitting the external air to mix with the escaping smoke and steam, and is supposed to have the dou, ble effect of cooling and condensing the smoke and steam, so that it will not burn and destroy the wire-gauze, and of producing a horizontal or backward current of air, which throws the sparks into the receptacle hereafter described.

2. A peculiar shape in the wire-gauze cap, extending a considerable distance backward, over or beyond the back of the top of the smoke-pipe, which affords a space for the sparks to be thrown down into the receptacle hereafter described, the shape of the back part of the cap, or wire-gauze, being such that the sparks do not strike it perpendicularly, but obliquely to its surface, and thus are thrown down instead of passing through the apertures.

3. A receptacle for sparks, back of the top of the smoke-pipe, and under the back part of the gauze-cap, at the lower part of which

REPORT OF A COMMITTEE OF THE CITY

COUNCIL OF BALTIMORE, APPOINTED TO WITNESS CERTAIN EXPERIMENTS UPON THE POWER OF THE LOCOMOTIVE ENGINES EMPLOYED ON THE BALTIMORE AND OHIO RAILROAD.

(From the American Ruilroad Journal.) The Joint Committee of the City Council of Baltimore, appointed to witness experiments upon the power of the locomotiveengines, on the Baltimore and Ohio Railroad, at the inclined planes, respectfully report:

That your Committee left Baltimore on the morning of Tuesday last, accompanied by a Committee of the Board of Directors of the Company, a Committee of the Board of Trade, and other individuals, in all amounting to 42 persons. The train consisted, besides the engine and its tender, of a double 8-wheeled passenger car, constructed to accommodate 44 persons,

and three 4-wheeled passenger cars, capable of containing 17 each. After some delay, occasioned by coming in contact with the

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REPORT OF EXPERIMENTS ON THE POWER OF LOCOMOTIVE-ENGINES.

leaders of a burden team, who being alarmed, sprung before the engine from off the adjoin. ing track, the train arrived at the foot of plane No. 1, at the distance of 42 miles from Baltimore. The instructions given to the engineer had been, as your Committee are informed, to stop here, and, disengaging the double car, to attach the thre single cars to the engine, and to ascend the planes with them, and with 50 passengers, this being a demonstration of the power of the engine, which, it was believed, would satisfactorily prove its efficiency for use, where the eleva. tion was at the rate of 200 feet per mile. Confident, however, in the power of the engine, the engineer, without stopping at the foot of the plane, commenced its ascent, with the train that had left Baltimore. The impetus acquired on the level, was lost in the first 300 feet of the ascent, after which, the engine drew its load steadily to the summit of the first plane, at the rate of from four to fire miles an hour, accumulating speed as it approached the top. This plane is 2150 feet in length ; 2050 feet of which ascend at the rate of 197 feet per mile, and 100 feet at the rate of 201 feet per mile. From the first plane the train proceeded to the second, which is 3000 feet in length; 2800 feet of which ascend at the rate of 170 feet per mile, 100 feet at the rate of 227 feet per mile, and 100 feet at the summit, at the rate of 264 feet per mile. The engine and its train ascended at the rate of from 5 to 6 miles per hour, to within 30 feet of the summit of this plane, when, while on the grade of 264 feet to the mile, it stopped. The three small cars, weighing 5 ton 100 weight, were then cast loose, when the engine starting, without assistance, on this grade, drew the double car and passengers to the summit with the greatest apparent ease. The steam escaped in volumes from the safety-valve, as well when the engine reached the summit of the planes, as when it left the foot of them. The weight drawn up the planes was as follows, according to actual weighing :

of 20 tons 15 cwt., deducting from the above the weight of the three cars cast otf on plane No. 2, was drawn with equal ease up a grade of 264 feet to the mile, the engine starting the train from rest on this grade. At the summit, two car loads of pig iron, weigbing each 4 tons, were attached to the train, and the whole, weighing then 33 tons 15 cwt., was made to descend the plane, on the return to Baltimore, by the action of the engine alone, and without the assistance of a break, at such speed as the engineer pleased, and was several times stopped, on the way down, to show the command in which the engine was held.

With such results as the above, it is unnecessary to add, that your Committee are equally gratified and surprised; and from what they themselves witnessed, they have no hesitation in expressing their conviction, that the engines of the Baltimore and Ohio Railroad are capable of drawing with ease, at least 50 passengers, up ascents of any length, of from 200 to 220 feet per mile.

From the account thus given, it will be at once seen, that the performances of the best engines in England have been far surpassed ; and although your Committee are aware, that calculation was competent to prove the prac. ticability of ascending grades like those at the planes, with engines of the weight and power used on this occasion, and with similar loads, yet it was reserved for the company in question to prove that machines of such giant power could be constructed, combining with their great strength, the important qualities of speed, durability, facility of repair, and capability to use anthracite as their fuel.

Your Committee are glad to have an opportunity of expressing their sense of the obligations, which the efforts of the Baltimore and Ohio Railroad Company have conferred upon the railroad system generally, and more especially in reference to it, as connected with the city of Baltimore. It is now a matter of common parlance to assert, that the Alleghanies can be passed by locomotiveengines, by the Potomac route, without the use of stationary power; and your Committee entertain no doubt of the fact. It is this which gives to Baltimore the vantage ground, in the competition with her sister cities, for the western trade; and yet this is owing, not more to the geographical depressions of the mountain range, than to the engines perfected by the company just named. Excepting the engines manufactured by them, there is probably not one in the United States, although some of the best ever made in England have been imported, which is capable of ascending the grades and passing the curves for any profitable purpose, which must occur among the mountains on the road in question. While nature, therefore, has

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REPORT OF EXPERIMENTS ON THE POWER OF LOCOMOTIVE-ENGINES.

185

done much to facilitate the intercourse of Baltimore with the west, the Baltimore and Ohio Railroad Company has not done less.

Your Committee make these remarks as an act of justice; and they do it with the more pleasure, because it enables them to bestow a deserved compliment upon the American mechanics, who have so well illustrated their capacity and skill in the manufacture of the engines in question--proving, satisfactorily, that in this, as well as in the other departments of human industry, their inventive genius is capable of the most elerated and useful fights. It is now but a few years since the universal voice called upon the Baltimore and Ohio Railroad Company to follow the example of their neighbours, and import their engines; and their perseverance in refusing to do so, although founded upon the very best and truest appreciation of circumstances, was stigmatised as folly or obstinacy. The result has fully justified their course, and showed that their confidence in the skill of the artisans of this country to produce a more perfect machine than had yet been manufactured in England, and better adapted to the road from Baltimore to the Ohio, was fully warranted.

The capacity of a locomotive-engine, when employed in heavy drafts, depends upon three things:- 1st. Its weight, which gives it the adhesion on the rails that is requisite; 2nd. The capacity of its cylinders to use the adhesion to its utmost limit; 3rd. The ability of the boiler to supply the cylinders with steam equal to their capacity. Where the power is applied to hut one pair of wheels but half the adhesion is used, supposing the weight to rest equally on the four wheels. Where the power is applied to both pair, the weight of the whole engine is made effective to produce adhesion. The English engines generally have but one pair of wheels geered. The engines of the Baltimore and Ohio Rail. road Company have both pair geered. The weight of the engines, therefore, being equal, and there being enough steam to overcome the adhesion of both pair of wheels, the Baltimore engine must be double the effective power of the English engine. The larger the cylinders, in stroke and in diameter, there being steam enough to supply them, the greater the power they afford—and the cylinders of the Baltimore engines being twelve and a half inches in diameter, and twenty. two inches stroke, while the English engines rarely exceed ten or eleven inches in diameter, by seventeen or eighteen inches stroke, the former are, of course, the most effective, since the daily experience of the Baltimore and Ohio Railroad Company shows the ample supply of steam, which the peculiar construction of the boiler affords at all times. At the end of nine montis of constant use,

the tubes of the Baltimore boiler have been found on examination as perfect as when they were inserted, while in the English engine the renewal of tubes is a constant source of expense and vexation. The number of tubes in the Baltimore engine is 400, while in the English engine it rarely exceeds 120, causing a proportionate difference in the fire surface, or capacity for generating steam, the heat applied in the furnace being the same.

Your Committee state these facts, which are of easy comprehension, to show that the superiority of the Baltimore engine over the English one of the same weight, is not a matter of accident only, or about wbich there can be any mistake, but an inevitable consequence of well known philosophical and mechanical principles.

The engines of the Baltimore and Ohio Railroad Company are manufactured by Messrs. Gillingbam and Winans, at the Company's shops. Both of these gentlemen were, for many years, in the service the Company, in the department of machinery, before they became contractors; and to them, together with the late Phineas Davis, the former contractor, is to be attributed the perfection of the present locomotive. Their establishment is a large one, employing upwards of a hundred workmen, and of itself is of great benefit through the employment that it gives, and the money wbich, necessarily, it is the means of circulating. The Company has a prior claim to the services of the contractors, paying a stipulative price for the engines (5000 dollars), and the ma. chinery which are obtained from them, and paying for repairs by the time which they

The expenses of the shops are borne by the contractors, who build and ma. nufacture for others as well as the Company. The shops and permanent machinery have cost the Company about 10,000 dollars, which sum has been already returned to it in the reduced price for which the contractors build the engines, in consideration of the advantages of the use of the shops, the proximity to the road, and the opportunities of working for other companies.

In the annual report of the Baltimore and Ohio Railroad Company, the power of their engines has frequently been mentioned, and the authority and character of these reports hare been quite sufficient to authenticate the facts therein stated. Your Committee are aware, however, that the incredulous as to the ascent of the plains at Parr's Spring Ridge, have not been few, and, perhaps, the very importance of the results stated, so far exceeding all previous experience, has been the cause of doubt; or, in other words, “the news was held to be too good to be true.” Your Committee, however, are witnesses, with many others, to the surprising efforts

corsume.

186 REPORT or EXPERIMENTS ON TOE EXPLOSIONS OF STBAM-BOILERS, and efficiency of the engines in question, and The injection of water being continued, the they are glad that an opportunity has been gas ceased to come over. afforded them to add their testimony in This gas was subsequently examined ; it corroboration of that which reflects so much was a non-supporter of combustion, was not credit upon the mechanics of our country, combustible, did not render lime-water tur. and to express their approbation of the per- bid; it was, in short, nitrogen gas, with severing and patriotic individuals who, in perhaps a small admixture of oxygen. the management of the Baltimore and Ohio These observations were considered as only Railroad, have called our native talent into preliminary to a more extended examination play, and done so much to develop and in- of the subject. The theory which makes the crease the efficiency of the railroad system. decomposition of water, by heated metal,

All of which is respectfully submitted. produce hydrogen, and this gas by its union SAMUEL BARNES,

with oxygen, produce explosion, has been WALTER BALL,

supported by many, and deserved a respect. SAMUEL HARKER,

Committee of

ful examination. The difficulty of finding J. B. SEIDENSTRICKER,

the

the oxygen for the hydrogen to recombine JOSHUA DRYDEN,

First Branch.

with, has been ingeniously, though, as we Jous Scott,

conceive, not successfully, parried. The HENRY MYERS,

fact, that though water is decomposed by

heated iron, hydrogen gas decomposes beated WILLIAM REANEY,

Committee of

oxide of iron, has also been plausibly urged SAMUEL READY,

the

and supported by collateral evidence of a JAMES FRAZIER,

Second Branch.

similar nature, drawn from the action of F. LUCAS, jun.

heated copper upon ammonia.

To study the subject in detail, it was ne.

cessary to examine the relative effects of hot REPORT OF EXPERIMENTS MADE BY THE and cold water; the relation between the COMMITTEE OF THE FRANKLIN INSTI

quantity of gas produced, and of water inOF PENNSYLVANIA ON THE

TUTE

EX-
THE

jected, at different temperatures of the bottom PLOSIONS OF STEAM-BOILERS, AT

of the boiler; and to raise the temperature of REQUEST OF THE TREASURY DEPART- the metal so high that no objection on that MENT OF THE UNITED STATES.

score should exist to the results. Moreover,

the oxidated surface was to be removed, and (From the Journal of the Franklin Institute.)

the boiler exposed to the action of the water (Continued from p. 174.)

in as clean a state as the nature of the case VII. To deiermine by actual experiment admitted. The gas was collected in gra: whether any permanently elastic fluids are duated jars, the water drawn in by the forc, produced within a boiler, when the metal be- ing-pump was taken from a measure, and the comes intensely heated.

quantities injected noted. The time was To make this experiment, the bottom of also noted between the experiments. the boiler was to be intensely heated, water The conclusions to which the Committee to be injeeted, and the elastic fluids disen- were brought, render a detailed exhibition of gaged, to be collected. The bottom of the the experiments unnecessary, except so far as boiler being cleaned, heated water was thrown such a statement may go to show the degree in from the forcing-pump, the elastic fluids of care which was used in prosecuting the produced flowed through a flexible tin pipe subject, and thus to give confidence in the which was attached to the stop-cock a (plates results. The experiments of the first day in I and 2), and passed into a tub containing which the gas was collected as already dewater. At the end which dipped into the scribed, were tentative, they served to render water there was a stop-cock, opening and the methods of experimenting more precise, closing the pipe at pleasure; the cock a was On the second day one of the glass plates always open. On the first day's trial a small in the boiler-head cracked and the escape of quantity of water, previously placed in the gas with the steam, through the crack, lenboiler, was allowed to boil away; the bottom dered the results as to quantity jaconclusive, of the boiler was heated to redness, and water The gas was uniformly found to extinguish a injected. The stop-cock being opened under candle, and not to burn itself. The mercury a receiver, in the tub sei ving as a pneumatic- in the iron tube into which the thermometer cistern, a gas which issued through the flexi- N, plate 1, dipped, soon boiled; the thermoble tube was collected, the water condensing meter had been previously removed. Th the high steam with which the gas was mixed. thermometer in the other tube M was oba The smell of this gas was empyreumatic, an served as giving an indication of whether opaque wbite vapour came over with it, the temperature within was increasing or which disappeared on standing. Half a pint diminishing. of the gas was collected for examination. It was now distinctly seen that the air

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