CAISSON: Description of, 142-3; number with a field battery, 41. CAKING of powder prevented, 89. CALIBRE: Definition, 12; number in a piece ascertained, 12. CANISTERS, 91: For field service, how made, 94; for siege and sea-coast service, how made, 95 —How piled, 104. CANNON: Bore, 12 —Brass, external and internal injuries, 23 —Dimensions, how regulated, 11 —For siege train, 36 —Iron, injuries, 24 —preservation of, 25; service of, how judged, 24 —How marked, 21-2 —Condemned cannon, how marked, 22 —Proof of, 22 —Kinds, 9 —Length of, 27-8, 30, 33 —Rifle cannon, 163-7. CARCASSES, 92. CARRIAGES: Classification, 123 —Movable, 123; field gun, 125-6; mountain artillery, 127; prairie, 127; limbers, 126-9; siege-gun, 128 —Stationary, 129-30; barbette, 132-3-4; casemate, 138-9; columbiad, 136-7; flank-casemate, 140 —Mortar beds, 131 —Wrought iron, 141-2 —Number in a field battery, 41. CARTRIDGE BAGS: Where filled, 89. CARTRIDGES: For hot shot, 97. CASCABLE, 13. CASEMATE: Carriage, 138-9 —Gin, 146. CHAMBER: Definition, 14; object of, 32; form for mortars, 32; for howitzers, 28; for eprouvette, 32; gomer, 32. CHARGES: Definition, 60 —For breeching, 60 —For double shot, 60 —For field guns and howitzers, 62 —For fire-balls, 61 —For heavy guns, columbiads and howitzers, 62 —Service charge for heavy guns, 60 —For hot shot, 60 —Greatest charges for mortars, 62 —For mortars, how regulated, 61 —For ricochet firing, 60 —For shells fired from columbiads and heavy guns, 108 —For field shells, 108 —For mortar shells, 107 —For spherical case shot, 108. CHASE: Definition, 13. CHASSIS: For barbette carriage, 134-5 —For casemate, carriage, 139-40 —For columbiad, 138 —For flank-casemate, 141 —For wrought iron carriage, 142. CHEEKS, 124. COEHORN MORTAR: Diameter, 33 —Weight of bed, 33 —Length of, 33 —Length of bore, 33 —Length of chamber, 33 —Use, 34 —Greatest charge for, 62 —Bed, description of, 131. COLUMBIADS: Definition, 30 —Windage, 82 —Charges, 62 —Chamber, 30 —Peculiarities, 30 —Weights, 30 —Length, 30 —Natural angle of sight, 30 —Gun carriage, 136-7; chassis, 137-8 —Shells, charges for, 108; method of loading, 102. COMPOSITION, for preserving iron pieces, 160; application, 160; for axle-trees of carriages, 158. CONDEMNED cannon, how marked, 22; shot, how marked, 102. CONTENT: Of a barrel, 155; box, 155; conic frustum, 154; gomer chamber, 155; spherical segment, 155; cylinder, 155.