Artillery of the Future Frontispiece Diagram Hydro-Springs and Hydro-Pneumatic Recoil Systems 41 3-inch Field Gun Breech Mechanism Facing 63 Carriage Model 1902, Plan View Facing 65 Elevating Gear 67 Traversing Gear Facing 66 Recoil Controlling Mechanism Facing 69 Caisson Limber, Model 1916 73 Caisson, Model 1902 Facing 74 75-mm Field Gun, Model 1897 (French) 85 Breech Mechanism 86 Firing Mechanism 88 Gun Carriage, Longitudinal Section 90 Gun Carriage, Rear View 91 Gun Carriage, Left Side 92 Gun Carriage, Right Side 93 Gun Carriage, Plan View 94 Wheel Brake Mechanism (Abatage) 96 Range Elevating Mechanism 98 75-mm Field Gun, Model 1916 (American) 107 Breech Mechanism 108 Breech Mechanism 109 Gun Carriage, Left Side 112 Gun Carriage, Right Side 113 Gun Carriage, Rear View 116 Gun Carriage, Plan View 117 Gun Carriage, Longitudinal and Transversal Sections 119 Recoil Mechanism 122 Valve Turning Gear 125 Angle of Site Mechanism 128 Elevating Mechanism 130 Traversing Mechanism 132 75-mm Field Gun, Model 1917 (British) 148 Breech Mechanism 149 Recoil Mechanism 151 Gun Carriage, Plan View 152 4.7-inch Gun, Model 1906, Longitudinal Section 155 Gun Carriage, Left, Plan and Rear Views 158 155-mm Gun, Model 1918, (GPF) (Filloux) 161 Longitudinal Section in Battery 163 Carriage and Limber, Traveling Position Facing 165 155-mm Howitzer, Model 1918 169 Carriage and Limber Facing 166 Carriage Unlimbered Facing 167 Breech Mechanism 171 Breech Mechanism 172 Firing Mechanism 174 Longitudinal Section 180 Carriage, Left Side 183 Elevating Mechanism 184 Traversing Rollers 186 Traversing Mechanism 188 Air and Liquid Pumps 190 Howitzer Carriage, Plan View 191 Quadrant Sights, Model 1918 193 DeBange Obturator 205 Mark II-A Primer 207 155 Steel Shell Mark IV 210 155 Shrapnel Mark I 212 4.7-inch Gun Ammunition 213 3-inch Gun Ammunition Facing 214 Detonating Fuze, Mark III 225 Detonating Fuze, Mark V 226 45 Second Combination Fuze, Mark 1 230 21 Second Combination Fuze, Model 1907 M 231 75-mm Gun Ammunition 234 Rear Sight, 3-inch Field Gun 259 Panoramic Sight, Model of 1917 261 Panoramic Sight, Model of 1915 264 Range Quadrant, 3-inch Field Gun 266 Battery Commander’s Telescope, Model 1915 271 Aiming Circle 275 Diagram of Range Finder Principle 279 Range Finder, Rear View Facing 280 Range Finder Tripod Facing 281 Three-Steps in Range Finding Facing 282 Fuze Setters Facing 284 Camp Telephone Facing 286