if desired, delivering each size at a different place. It did its work remarkably easy and quick, and was superior, I think, to any exhibited. One of the machines was purchased by an American gentleman at my suggestion, and I hope we may have it introduced into this State, as it will prove, I doubt not, a real improvement.

STEAM ENGINES.-Of these there was a great variety, remarkably well got up, both stationary and movable. They are in use in many parts of England. I saw them at work on several of the large farms and they were very much approved. For this country, however, I did not see any that I consider as useful as those manufactured in our own State by Hoard & Bradford, of Watertown, which for simplicity, lightness and cheapness, as well as efficiency, possess decided advantage over any I saw.

Of the THRASHING MACHINES, there was a great variety exhibited; none, however, except one in the United States division, from Messrs. Allen New-York, operated by a single horse. Those in the English department that were operated by horses required from four to eight. The steam power is fast superseding the use of horses for this purpose.

Of SMUT or grain cleaning machines there were quite a number exhibited, but none which, so far as a judgment could be formed from a careful inspection and without a trial, which should have been had, was superior to those shown in the United States department by Leonard Smith of Troy, N. Y.

A number of FANNING and winnowing Mills, of various patterns, were shown. GRANT'S, from this State, which has stood pre-eminent for its superiority, was exhibited, and was bought by a gentleman from Scotland, after a very careful examination-he being satisfied that it was the best machine he had ever seen.

DYNAMOMETERS, for testing the draught of plows, and other implements, were shown. One from France, a self-registering

one, promised to furnish what was desired, correct indicationsbut unfortunately the days on which the implements were tested, were so moist that it could not be used. One, by Bentall, patented in England, was used on the trial--and did tolerably well-but I do not consider it an improvement upon those in which the strain is indicated by the compression of a spiral spring which we have in use here.

The trial of the implements having been made mainly previous to the opening of the exhibition, may account, in part, for the want of notice being taken of many very useful articles in the United States Department-though the assurance was given after the trial had been made of the plows and reapers, that the principal collections in the United States Department, should receive an Honorable Mention. Why this was not done, does not appear in the report made.

IDE'S Wheel Cultivator, exhibited by Levi Wells, Rochester, is a very useful implement here-but no opportunity was given to test its capabilities at the exhibition.

CHARLES ROSS of Rochester, had on exhibition two of Fitzgerald's Portable Grist Mills, with his improvements-but they were not in operation. The Jury examined them, and their cheapness were recommendations which attracted the notice of farmers. There were a number of mills on exhibition, and the Prize Medal was awarded to one exhibited in the English Department, which was composed of metal-and which had, I think, an apparatus for supplying air to the grinding surface of the mill stones, which is considered important and useful.

EDDY & Co., Washington County, N. Y., had a model of Taplin's Horse Power, on exhibition, which, in this country, is much approved.

H.-1852.

CLASS 10.-Philosophical Instruments and processes depending

on their use.

The exhibition in this class was very extensive and of great variety, and comprised many articles of ingenuity, &c. Of the 30 Council Medals, only one was awarded to the United States, and that to W. Bond & Son, of Boston, for the invention of a new mode of observing astronomical phenomena, &c. The great Equatorial Telescope, of Ross, which was said to be the most powerful instrument ever made, received a Council Medal. "The diameter of the object glass is 11 inches-and a magnifying power of six hundred times in diameter, may be used without prejudicially darkening the field of vision." There were many other Telescopes of great merit, exhibited-several from France, of peculiar excellence. The French exhibition, in this class, was very mumerous and of acknowledged merit, and received a large number of prizes. A Council Medal was awarded to Count Durrin of London, for the extraordinary application of mechanism to his steel expanding figure of a man. This piece of mechanism was designed to illustrate the different proportions of the human figure; it admits of being expanded from the size of the Appollo Belvidere to that of a Colossal Statue. Its immediate object is to facilitate the exact fitting of garments, more especially in cases where great numbers are required, as in the equipment of an army.

Personal attendance is not required, as there is adapted to the figure a new system of measurement, which enables any person to take the exact size and form of an individual-and from the measurement so taken the figure can be so adjusted as to represent, correctly, the person to be fitted. An establishment provided with a few of these figures, would be able to fit, perfectly, the clothing of an entire army. This was a most ingenious piece of mechanism, and in addition to its ingenuity, can be made of great practical utility.

J. R. ST. JOHN, of Buffalo, Self-Determining Compass.-To this was awarded a Prize Medal. This compass is so constructed

that the deflection of tne principal needle is always shown, by indicators, upon graduated scales. This result is obtained from two small or sattelite needles suspended upon axes fastened in the disk or compass cord, at equal distances, and right angles to the center of the main needles. The extremities of the graduated arcs or scales, are marked with the letters E. and W., by which the character of the deflection is known, while the quantity is read upon the scales. It shows the presence of any disturbing forces upon the needle, and also the amount of deflection resulting from these causes. It was admitted to be in advance of any instrument in use. Many were decidedly of opinion that this should have received a Council Medal.

The AQUATIC VELOCIMETER, shown by the same gentlemanwhich gives the true velocity of a vessel through the water, and the aggregate distance traveled at any time, was very ingenious.

ERRICSON, New-York, exhibited a variety of very ingenious and useful nautical instruments. HiS SEA LEAD, a valuable instrument for taking soundings at sea without rounding the vessel to the wind, and independently of the length of the lead line.

PYROMETER, an instrument intended as a standard measure of temperature from the freezing point of water up to the melting point of iron; the tension of a permanent volume of atmospheric air or azote, measured by the height of a column of mercury under a vacuum, being the indicator.

ROTARY FLUID METER-For measuring fluids by the velocity with which they pass through apertures of definite dimensions.

RECIPROCATING FLUID METER-For measuring the quantity of water which passes through pipes during definite periods.

ALARM BAROMETER.-Whenever the mercury sinks below any given altitude, the falling of the column causes a gong to be struck

and being near the helm of the vessel gives instant warning to the helmsman, and the danger of an approaching storm can be averted.

DISTANCE INSTRUMENT-To measure the distance of an enemy's ship, to enable the officer measuring to elevate his gun with precision. HYDROSTATIC GUAGE, and Hydraulic Machine for testing the same.

These instruments were all valuable and were examined by nautical men with great interest. They were most creditable to Mr. Erriccson, and elicited from the Jurors the Prize Medal.

Professor BACHE, of Washington, received a Prize Medal for his Standard Weights, Measures and Balance. They were admirably prepared, and few articles in the United States Department attracted more attention. Mr. BURT, of Michigan, for a solar compass and instruments, received a Medal. They were of great excellence, and justly entitled to the award given.

DAGUERREOTYPES were extensively shown. Those from the United States were conceded to be superior in general effect, to those from any other country. BRADY & LAWRENCE, of New-York, each received a Prize Medal-and one was awarded to a Mr. Whipple, of Michigan, for a daguerreotype of the moon. There were several other exhibitors whose pictures were very superior. Those of Evans, from Buffalo, were much admired, as were those of Meade & Brothers, New-York. The following article, from an English literary journal, shows in what estimation our exhibition was held. "Daguerreotypes are largely displayed by the French, as might have been expected, that country being proud of the discovery; but the examples exhibited by the Americans surpass, in general, beauty of effect, any which we have examined from other countries. This has been attributed to a difference in the character of the solar light, as modified by atmospheric conditions; we are not, however, disposed to believe that to be the