KEY AND INDEX 



how obtained, 6, 99-100; 

 centrifugal governor, double- 

 acting engine, cut-off, in- 

 vented by Watt, 6. 102; high 

 pressure advocated by Treyi- 

 thick, compound engine in- 

 vented by Hornblower, 6, 

 103 ; both ideas denounced by 

 Watt, 6, 103; importance of 

 Watt's inventions, 6, 104 

 1 06; persistence of walking 

 beam, general use of, aban- 

 doned, 6, iio-m; use of 

 high-pressure by Trevithick 

 and Evans, 6. 112-114; the- 

 ory of, worked out by Carnot 



and others, 6, 115; theory of, 

 j Clausius and 

 Rankine, 6^ 115; essential 



perfected by 



principles of operation, 6, 

 116; principle and invention 

 of compound engine by Horn- 

 blower, revived by Woolf, 6, 

 117; advantages over simple 

 engine, 6, 117-118; triple 

 and quadruple expansion en- 

 gine, chief use of, 6, 118; 

 early belief in possibility of 

 rotary engine, 6, 119; idea 

 patented by Watt, 6, 119- 

 120; rotary engine of Rout- 

 ledge, 6, 120-121; of Bell, 

 6, 12 1 ; model loaned to 

 South Kensington museum by 

 Fielding and Platt, 6, 122; 

 the Hoffman rotary engine, 

 6, 123; possible future of, 

 6, 123; steam turbine, in- 

 ventor of, 6, 124; descrip- 

 tion of Parsons' turbine en- 

 gine, 6, 125; advantage of, 

 6, 126; largest steam turbine 

 yet built, 6, 130. 

 Steam Locomotive, The, Chap- 

 ter IV, 7, 119; the "Oruktor 

 Amphibious," constructed by 

 Evans, 7, 121; the locomotive 

 of Richard Trevithick, 7, 

 122; Brunton's remarkable 

 locomotive, 7, 123; the ex- 

 periments of Blackett, 7, 124; 

 Stephenson solves the prob- 

 lem, 7, 124; the contest be- 

 tween the Novelty, the Sans- 



pareil, the Perseverance, and 

 the Rocket, 7, 131; the 

 Rocket declared the winner, 7, 

 134; the Globe, 7, 134; Ste- 

 phenson's Planet, 7, 135; im- 



?rovements in recent years, 

 , 135; some points of inter- 

 est concerning the compound 

 locomotive, 7, 138; the prob- 

 lem of keeping the fire-box 

 supplied with coal, 7, 140; 

 the Westinghouse Air-brake, 

 7, 141; automatic couplings, 

 7, 147; comparison between 

 the Rocket and a recent type 

 of locomotive, 7, 150. 



Steamship, ocean, equipped 

 with turbine engines, 6, 124. 

 (See Steamboat.) 



Steam shovel, use of in "open 

 pit" mining, 6, 275. 



Steel, The Age of, Chapter XIII, 

 6, 271; boats used in trans- 

 porting iron ore, 6, 280; ma- 

 chinery used in handling iron 

 ore, 6, 282; conversion of 

 iron ore into iron and steel, 

 6, 283; old method of manu- 

 facturing, 6, 287; Bessemer 

 process of making steel, 6, 

 289; open-hearth method of 

 making, 6, 294; alloy steels, 

 6, 295. 



Steelyard, a lever of the first 

 class, 6, 30. 



Steinheil, Professor, assists in 

 developing the first practical 

 telegraph, 8, 17; experi- 

 ments of, 8, 48. 



Stephenson, George, the success 

 of his locomotive largely due 

 to Trevithick's method of al- 

 lowing the steam exhaust to 

 escape into the funnel of the 

 engine to increase the draught, 

 6, 114; solves the problem of 

 steam locomotion, 7, 124; 

 his early locomotives, 7, 126; 

 the locomotive of 1825, 7, 

 127 ; description of his famous 

 Rocket, 7, 133. 



Stereo-chemistry, 5, 219. 



Stethoscope, invented by Laen- 

 nec, 4, 201. 



[218] 



