FACE of the piece: Definition of, 14. FALL: Point of, 73 —Angle of, 74. FALLING BODIES, law of descent, 159. FIELD ARTILLERY: Charges for, 62 —Kinds, 40 —Tactics, 44-9, 50. FIELD BATTERY: Number of pieces, 40 —Battery of horse-artillery, 41 —Composition of, on a war establishment, 41 —Composition of mountain howitzer battery, 42 —Ammunition, 41 —Draught horses, 42. FIELD GUN, how mounted, 44 —Charges for, 62. FIELD CARRIAGES: Kinds of, 125 —Description, 125-6. FIELD AND SIEGE GIN, 146. FIELD SHELLS: Loading, 100 —Charges, 108. FIELD-PARK, 42; quantity of supplies for, 42; carriages, 43. FILLING: Mortar shells, 101; columbiad shells, &c., 102. FIRE BALLS: Definition, 92 —Charges, 61 —How preserved, 104. FIRING: Field pieces, 46-7-8 —Rapidity of, for mortars, 34; for field pieces, 46 —Within point-blank range, rule for, 52 —At night with guns and howitzers, 55; with mortars, 59 —Mode of facilitating firing for any given distance, 54; use of remarkable points on the ground, 55 —Ricochet firing, 73 —Effect of firing upwards under a large angle, 65. FIXED AMMUNITION: Storing, 103-4 —Weights of, 107. FLIGHT OF PROJECTILES: Time of, 149. FLANK-CASEMATE carriage, 140-41. FOOT, number of gallons in a cubic, 160. FOOT SOLDIER, space occupied by, in ranks, 153. FORGE, 143 —Portable, 144 —Number with a field battery, 41; with field-park, 43. FORCES acting on a projectile, 51. FORCE of gravity, 159. FRICTION PRIMER: Description, 115; advantages of, 116. FURNACES for hot shot, 97. FUZES: Definition, 109 —Wooden, 109-10 —Paper, 111 —Bormann, 112-13 —U. S. sea-coast, 114 —Composition for mortar fuzes, 110; for paper fuzes, 111.