_GUN METAL_—is composed of 8 or 10 lbs. of tin to 100 lbs of copper.—The largest proportion of tin is used for mortars. _HAIRCLOTH._—Weight 30 lbs.—length 15 feet—breadth 11 feet. _HAND BARROW._—Weight 13 lbs.—length 5 feet 4 inches. _HANDSPIKES._—Common, weight 11 lbs. length 6 feet. _HARNESS._—For men, one set, 26 lbs. length, 12 feet.—Wheel harness for a pair of horses, such as is used in the service of artillery, about 1 cwt. _HORSES._—An allowance of 3 feet is generally made for the breadth of each horse standing at picket; and about 9 feet for the length of a horse. A light dragoon horse, mounted and accoutered complete, carries about 2 cwt. 1 qr. and 14 lbs. without forage. Horses in the service of artillery should not be made to draw above 3 cwt. each, besides the weight of the carriage. Horses for this service should never be lower than 14¾ hands. The contractor is obliged to furnish them of this height for government.—A horse is generally supposed equal to five men. Military horses _walk_ about 400 yards in 4½ minutes. _Trot_ the same distance in 2 minutes 3 seconds, and _gallop_ it in about 1 minute. With great burthens, less weight must be allowed for each horse to draw, than with medium burthens; as it cannot be supposed that, of a team of 8 horses, the leaders can draw so much as the horses nearer the carriage; and this disadvantage must increase as the team lengthens. A team of 4 horses may draw 6 cwt. each—Total 24 cwt. } including 6 ” ” ” 5 ” ” ” 30 ” } the 8 ” ” ” 4½ ” ” ” 36 ” } carriages. 12 ” ” ” 4 ” ” ” 48 ” } See also the word _Load_. It is usual in heavy carriages to reckon all their weight exceeding 12 cwt. as part of the load. _Horses allowed for drawing Field Artillery Carriages._ All the horse artillery carriages are drawn by 4 horses each, except 12 prs. which have 6 each. _Park Carriages_—12 pr. medium, and 6 pr. heavy, 6 horses each—6 pr. light, and 5½ howitzer, upon the new construction, are allowed each 4 horses, but upon the old only 3 each. Ammunition waggon, common pattern, 3 horses. ” ” Flanders pattern, 4 ” Forge cart, 2 ” Ammunition cart, 2 ” _HOWITZERS._—_Dimensions and Weight of Brass Howitzers._