274. M. S. BUCKLAND, Boston. One Fishing Rod. Good. 1020. S. BUCKLAND, Rockingham, Vt. One Fishing Rod. Fair.

9. LEONARD FOSTER, Boston. Trinity Latch, or Mortice Knob Door Fastenings, combining latch, belt and lock, in one simple plate of metal.

204. E. H. GEORGE, Newburyport. One double back Chain. Good. 103. M. MCCAFFERTY, Boston, an Apprentice. Specimen Brass Casting. Fair.

STOVES, GRATES, FURNACES, &c.

47. D. PROUTY & Co., Boston.

Three Whiting's Cooking Stoves, for coal and wood. Good

articles.

One Mears's

do.

Similar to Whiting's.

Twelve Mott's Stoves. Fuel Savers, so called.

Three Combined Rotary Cooking Stoves; for coal. These have tops to prevent the steam from escaping, which contrivance will also cause water to boil with less fuel, than where the vessels are in the open air as they usually are. Diploma.

Three Charcoal Furnaces.

Five Parlor Stoves, for wood.

Three Chip Furnaces. Good articles.

upon the air-tight principle. Both

Diploma.

68. DR. J. E. FISK, Salem. Fisk's Air-tight Coal Stoves. Two Stoves for burning hard coal well contrived.

52. W. LAMBORD, Boston. A Tin Baker.

111. L. BAILEY, Charlestown. One Foot Stove.

140. S. JOSSELYN, Boston. A Smoke Curer. A very ingenious

contrivance.

158. W. B. OLIVER, Boston. One Stove.

161. J. FOGG, Boston. Five Stoves. Very good articles.

178. H. T. BUTLER, Boston. Three Stoves.

Diploma.
Diploma.

180. ALLEN & GRIDLEY, Boston. Four Stoves and three Grates. Entered for exhibition only.

183. B. F. BUTLER, Boston. Three Stoves and five Grates. These are well cast and beautifully polished.

Diploma.

193. BOWERS & PRATT, Carver, Me. An open front Cooking Stove, with an oven in the rear of the fireplace. Skilfully made.

249. A. LINCOLN, Boston. Two Cooking Stoves.

311. H. & F. STIMPSON, Boston. Two improved radiating Rangés. Well known and superior articles. Silver Medal.

92. J. R. MOTT, New York. Mott's Agricultural Boiler and Furnace. An excellent and useful article. To this boiler, the furnace is so attached, that to fit it up for use, all which is requisite is a pipe running into a flue, or carried 10 or 15 feet high; thus saving the expense of setting in masonry. Silver Medal.

349. ADAMS & LITTLEFIELD, Lowell. Two Air-tight Stoves. The best article for burning wood. It has an outer cylinder or guard that retains its color.

Diploma.

350. HOUGHTON & JOSSELYN, Holliston, Me. One Copper Basin. Well made.

360. H. M. MILLER, Worcester. Two Stoves.

410. E. HAWKES, Boston. One Foot Warmer. An excellent article. It is made of tin, covered with soap-stone, and heated by a lamp.

Diploma. 453. JOHN SWASEY, Boston. A Coffee Boiler. This was made by an Apprentice.

Diploma.

467. J. MITCHELL, Pawtucket. A Tin Bureau. Well made. 476. J. PRESTON, Boston. A Hot Air Furnace. For exhibition only.

570. G. BROWN, Boston. Two Ventilators. Good articles.

576. GARDNER CHILSON, Boston. Eight Improved Column Stoves. Very good. Lever Grates for do.

Diploma.

One Improved Yankee Baker, fitted for coal or wood. 320. CHILSON & PAGE, Boston. Page's Hot Air Furnace. Improved by additional surface being presented to the fire, and by cast iron pipes passing through the hot air chamber. The grate is turned by a crank on the outside of the furnace, which prevents the ashes from escaping into the room.

595. JONES & WHITELEY, Boston. One Stove.

Diploma.

607. JOSEPH HUSE, Boston. Four Stoves. Good articles.

610. J. B. WHITCOMB, Boston. One Enamelled Grate. For the enamelling, a

Diploma.

708. ALLEN & GRIDLEY, Boston. One Smoke Jack. A good article.

767. W. PERRY, Bradford. Brass Registers. Made in a workmanlike manner.

952. JONATHAN NEWCOMB, Boston. Model Cooking Stove. Skilfully made.

1043. J. PRATT, Connecticut. One card of Stove Ornaments. Superior articles.

759. JOSEPH PLAYNE, Charlestown.

One Water Pot.

670. BRYENT & HERMAN, Boston. Two Hot Air Furnaces, one with a Rumford Oven, and the other with a globe drum, good articles. Three Column Stoves with cast mantels. Good articles.

Diploma.

Eight well finished bronzed Grates, and one Radiating Parlor Grate, new pattern, which is so constructed as to expose a large surface of heated iron to the air in the room. One German Silver Reflecting Grate, for burning soft coal. This is of a superior finish. Silver Medal. 827. JAMES HALL, Boston. Model Windmill, for smoky chimnies.

SWORDS, GUNS, RIFLES, PISTOLS, CANNON, AND MILITARY EQUIPMENTS.

401. H. PRATT, Roxbury. A Cast Steel Rifle, well made. 439. JOHN B. BAKER, Boston. Five Military Caps and one Cartridge Box and Belt.

456. N. P. AMES, Springfield. Twenty-four Swords, and three port fire Cutters. The superior excellence of Mr. Ames's swords is so well known in the United States, as to need no commendation from the Committee. Those offered for exhibition comprise specimens of the different forms and mountings required by the regulations for use in the army. Amongst them the Committee particularly noticed the heavy short sword of the artillery, and the rapiers of the military engineer, as being remarkable for the beauty of their shape; and also the very splendid sword to be presented to Commodore Hull. The perfection, to which the finish of the latter is carried, can hardly be overrated. The excellence of temper, so far as the Committee had the means of judging, was in all alike. Silver Medal. One Brass Six Pounder. This specimen of casting, the Committee consider it no extravagance to pronounce absolutely perfect. The minutest examination would detect none of those imperfections to which cast metal is liable, and which do not destroy the value though sometimes they injure the beauty of the casting. The Committee would very willingly have awarded to Mr. Ames the highest premium offered by the Association. But as they were restrained from awarding the gold medal except for "some very valuable invention or improvement," they would give in this instance only the second grade of premium for very superior manufactured or wrought articles." Silver Medal.

507. G. H. PRATT, an Apprentice, Roxbury. A Rifle Pistol and apparatus. Very creditable to him.

1005. GROVER & LOVELL, Boston. Three pairs of Cast Steel Pistols. They appear to be well made and of simple construction.

919. NATHANIEL N. WILMOT, Boston. A Double Barrelled Fowling Piece. This gun is remarkable, like all others proceeding from Mr. Wilmot's hands, for its extraordinary beauty and perfection of finish. Its minutest details present evidence of great care and consummate skill. Silver Medal.

816. T. MEHIGAN, Boston. A Powder Horn.

1023. CYRUS ALGER & Co., South Boston. Two Light Brass Six Pounder Chambered Navy Guns, modelled similar to the American Columbiad, and French bomb cannon.

These cannon are not exhibited merely as specimens of casting, but of the improvement in construction which has been lately introduced, and to test the value of which, experiments are now making under the direction of Col. Bomford of the U. S. ordnance corps. This improvement consists of the introduction of the chamber into long guns, and consequent upon that, an alteration in the external shape of the piece, by which with a less weight of metal, an equal strength is obtained in guns of the same calibre. In short pieces of ordnance, like the mortar, &c., the chamber has always been employed; but its introduction into heavy guns is of comparatively recent date. It is the substitution in the French marine of a chambered gun for the discharge of shells instead of round shot, that establishes the peculiarity and celebrity of the French or European bomb-cannon.

Col. Paixham is generally considered in France and elsewhere as the original inventor of this peculiarity; and the tremendous engine of destruction, which is destined to effect a great change in civilized warfare, bears his name. The merit, however, of the introduction of a similar arm, called a COLUMBIAD, is due in point of priority to the United States, where it first originated, as a number of chambered cannon for sea coast defence were cast, more than thirty years ago, during the administration of President Jefferson. The first experimental firings were made in Washington, with a nine inch chambered cannon, by order of General Dearborn, the Secretary of War, under the direction of Col. Burbeck of the 1st regiment of artillery, and Lieut. Bomford of the corps of engineers, and proved highly satisfactory to the President and Secretary, who were present on the occasion. The report of these experiments to the war department, by Lieut. Bomford, recommending an increase of length and weight to the chambered guns, was approved; and, thus modified, do not essentially vary from the sea coast howitzer, now in course of construction for service.

The guns exhibited by the Company are chambered, and advantage has been taken of the increased strength caused by the chamber, to vary the shape of the piece and diminish the quantity of metal.

It may not be uninteresting to give the outline of a series of experiments now in process of being tried, and which, so far as they have progressed, seem to justify the expectation that the new form of the gun will in itself be a decided improvement.

The experiments were performed upon an iron cannon, having upon its upper surface ten holes drilled through the thickness of the metal into the bore, from the vent to the muzzle, in the line of the axis and at right angles or perpendicular to the bore-being distant from each other a space equal to twice the calibre. These holes had each fitted into it a screw capable of being removed at pleasure, and of allowing a pistol barrel to be inserted in its place. This pistol barrel contained a cast steel bullet, and upon the explosion of the cartridge, with which the cannon was loaded, the bullet would be projected vertically, and the projectile force ascertained by the number of half-inch boards it penetrated, the same being placed in a frame prepared for the purpose directly over the pistol.

The result of these experiments showed that the greatest force of explosion was where the ball of the cannon lies in contact with the cartridge, because the bullet penetrated a greater number of boards when the pistol was inserted into the hole over that point of contact, than when it was inserted into either of the other holes. It was also shown in the same mode that the force of the explosion and consequent strain upon the gun was proportionately less as the distance from the vent increased.

The primary object being to determine practically the true relative thickness of metal from the breech to the muzzle, these experiments proved that by altering the form of the piece by a more accurate distribution of its material, an equal strength with less weight would be obtained. The guns exhibited are without the usual reënforces, the swell of the muzzle and several of the mouldings. Their form is that of a cylinder united by its base to a truncated cone, the plane of junction containing the point where the ball and cartridge are in contact, and perpendicular to the axis of the piece. The bore being a hollow cylinder, the conic form of the exterior graduates the thickness of the metal.

These specimens weigh 592 lbs. each. Their weight, if made in the form generally adopted, would be more than 700 lbs. Thus this improvement causes a difference in its favor of more than 100 lbs., in the weight of so small a calibre as the six pounder.

In the mechanical execution of ordnance, this Company has long borne a high reputation, and the specimens presented fully sustain it.

Silver Medal.