=Riedler express pump=, 240 the belt driven pump, ills. and des., 238-240 =Reinforced pump valves=, des. and ills., 215 =Relief valve= of the underwriter pump, 384 =Resinous electricity=, 245 =Resistance=, def., 28 three laws of, in flow of water, 100 =Rheostat=, des., 256 =Rife hydraulic ram=, or engine, 177-179 =Right-hand thread=, def., 28 =Rock shafts, cranks, links=, etc., of the underwriter fire pump, 361 =Racks, water=, for water wheels, how best made, 131 =Roberts torpedo= for clearing wells, note, 202 =Roman screw= for raising water, des. and ills., 52 wells, historical ref., 48 =Rope pump=, ills. and des., 200 pumps, why so called, 187 socket, def., 28 =Rotary, hand, force pump=, ills. and des., 197 pumps, why so called, 188 =Rotative engine pumps=, des., 65 =Rubber=, how to determine quality of, 372 =Rule for calculating capacity of accumulator=, 172 for finding the specific gravity of a solid body, 95 for velocity of water in flume, pipes and tail race, 138 relating to the velocities of fluids flowing from orifices, 105, 106 relating to velocity of falling bodies, 89 to find weight of a cubic foot of anything in the table of specific gravities, 97 “=Runner=” of turbine wheels, des., 131 =Rust-joint=, def., 28 =Safety valve= for the underwriter pump, des., 383 =Salt=, specific gravity of, 96 =Sand=, specific gravity of, 96 =Saturated steam=, def., 286 =Savery, Capt. Thomas=, historical ref., 36 =Scoop wheel=, des. and ills., 56 =Screw jack= or lifting jack, def., 29 Roman, for raising water, des. and ills., 52 =Sea injection=, def., 29 =Seats, valve=, of the underwriter pump, 377 =Sea water=, how many cubic feet to ton, 97 specific gravity of, 96 =Selden’s packing=, recommended for packing power pumps, 230 =Semi-liquids=, def., 75 pump for handling, ills. and des., 233 =Setting of a turbine wheel= in penstock, des. and ills., 134 =Setting chamber of duplex pump=, des., 336 =Sewage=, pump for handling, ills. and des., 232 =Shawinigan turbine wheel=, des., 133 ills., II, IV =Shield for prevention of accident in gear pumps=, 233 =Ship pumps=, working, by ropes, ills., 14 “=Shocks=,” def., 29 =Shop name=, and shop number required on plate attached to the underwriter steam fire pump, 355 =Siloah’s fountain=, historical ref., 49 =Silver=, specific gravity of, 96 =Single acting pumps=, how they do their work, 188 why so called, 187 “=Slams=,” def., 29 =Slate=, specific gravity of, 96 =Sleeve-coupling=, def., 29 =Sliding friction=, def., 100 “=Slippage=,” def., 29 of water in pumps, 214 =Sluice=, def., 29 =Slurry pump=, def., 29 =Smith-Vaile single pump=, ills. and des., 329-330 =Snow steam pump=, ills. and des., 315-317 =Soap, pump for handling=, ills. and des., 233 =Solid=, def., 73