CHAPTER XIV. Battery Books and Records--Rolls, Reports, and Returns--The Ration--Salt and Vinegar for Public Animals--The Travel-ration--Present Organization of U. S. Light Field-battery--Cost of a Battery of Four 3.2″ Guns, in Detail--Price-list of Artillery-harness--Price-list of Harness for 1.65″ Mountain-gun--Price-list of Artillery Accoutrements, etc.--Price-list of Horse Equipments--Price-list of Stencil and Marking Outfits--Supply Table of Ordnance Stores for a Battery of Light Artillery for Six Months--Allowance of Ammunition for Target Practice--Standard Supply Table of Veterinary Medicines--Tableware and Kitchen Utensils--Allowance of Clothing, Equipage, Fuel, Lights, etc.--Weights of Certain Articles of Clothing and Equipage--Pay Table of Enlisted Men--Summary Court, and List of Punishments--U. S. Signal and Telegraph Code--Penetration of Projectiles--Cover for Field-artillery--Treatment of Sick Men--Tables of Weights, Measures, etc.--Tables for Converting Customary and Metric Weights and Measures--Salutes--Camp Furniture and Mess Outfits for Officers 431-496 A HANDBOOK FOR LIGHT ARTILLERY. PART I. MOUNTAIN-ARTILLERY. CHAPTER I. Guns. Carriages. Ammunition. Packing Outfit. Range Tables. Organization of Mountain-batteries. THE 1.65-INCH HOTCHKISS MOUNTAIN-GUN. [Illustration: Fig. 1.] DESCRIPTION. Material steel Total length 3.83 feet Length of bore 3.43 " Travel of projectile 3.10 " Calibre 1.65 inches Weight 121 pounds Grooves 10 Twist of rifling, uniform 1 in 29.83 cals. Muzzle-velocity 1298 ft.-sec. Maximum range 3500 yards The gun (Fig. 2) consists of the body and the breech mechanism. [Illustration: FIG. 2.] The body of the gun is made from a single forging of oil-tempered and annealed steel. The trunnion-ring is screwed on the gun-body just forward of the reinforce, and provides a support for the front sight. The bore is rifled with a uniform right-hand twist. The lands are very narrow in proportion to the grooves, and are ten in number. The =Breech-block= is a solid prismatic block of steel with rounded corners, having a horizontal movement in a mortise cut completely through the breech of the gun. The front face of the block is perpendicular to the axis of the bore, whilst the rear face is slightly inclined. The left end of the block is bored to form a prolongation of the chamber when the breech is open, and its front upper corner is cut away to allow free movement of the extractor.