=Compounding=, what it consists of, 335 =Compression gauge cock=, def., 20 =Compton hydraulic motor=, des. and ills., 153 =Computation of capacity of the underwriter fire pump=, method of, 353-354 =Computation relating to specific gravity= of various bodies, 95-98 relating to the velocity of falling bodies, 89, 90 =Conditions of service= required of a pump, 224 =Cone=, discharge, of the underwriter pump, I, 384 =Construction of the water ends= of single cylinder and duplex pumps, 209 =Contents=, Table of, part one, 15 =Controllable valve arrangement=, des. and ills., for underwriter pump, 386 =Copper=, specific gravity of, 96 =Copyright=, page, VIII =Cork=, specific gravity of, 96 =Corliss valves applied to the Riedler belt driven pumps=, 240 =Cornish (engine) pump=, des., 65 pumping engines, history of, 65 =Corrosion=, def., 20 =Covers, valve springs and guards= for the underwriter pump, 376 =Crane, Anglo-Saxon=, historical ref. and ills., 48 =Cranes=, lifts and hydraulic, 180 =Crow=, def., 20 =Cup leather packing=, 20, 154, 190 =Current delivered from a dynamo=, how reversed, 264 =Current electricity=, 244 =Current water wheel=, des. and ills., 123 =Cushioning=, def., 20 =Cushion valves= of the underwriter fire pump, 362 =Cylinder head or cylinder cover=, def., 20 of hydraulic jack, des. and ills., 158, 159 or barrel of a pump, des., 189 pumps, why so called, 188 =Cylinders for the water end= of the underwriter steam fire pump, 367 of the underwriter fire pump, thicknesses of, 356 =Davidson steam pump=, ills. and des., 287-289 =Dead end of a pipe=, def., 20 =Dean Bros. pump=, ills. and des., 326-328 =Deane single acting triplex power pump=, 234 switch valve, special features of, 34 steam pump, ills. and des., 317-319 =Dedication of work=, V =Delivery valves= of the underwriter pump, 376 =Dial of pressure gauge= of the underwriter pump, how marked, 382 =Diaphragm pumps=, why so called, 187 =Direct acting duplex steam= pump, des., 69 pumps, des., 66-68 =Direct current motor=, des., 249 =Discharge cone= of the underwriter pump, 384 pipe connection, ills., 223 how made, 204 =Disk= or =disc=, def., 20 =Domestic electric pumps=, ills. and des., 269 =Double acting power pump=, with 4 check valves, ills. and des., 227 pumps, how they do their work, 187, 188 pump, when invented, 53 =Double-eye or knuckle joint=, def., 20 seated poppet valve, def., 21 =Drafting water=, des., 21 =Draft tube= of a water wheel, des., 135 =Drain cocks= for the underwriter pump, 390 =Drip-pipe=, des., 21 =Driven or tube wells=, 202 =Dry steam=, def., 286 =Duct=, def., 21