Newcomen, Thomas, his construction of the atmospheric engine, 63
Oldham, Mr., his modification of the self-regulating furnace, 132
Paddle-wheel, the common one, 257. Mr. Morgan's patent one, 259
Papin, Denis, his contrivance, by which atmospheric pressure is rendered available as a mechanical agent, 48. Description of his steam engine, 71
Post-office steam packets, their speed, 268
Potter, Humphrey, his contrivance for working the valves, 67
Power of a steam engine, how estimated, 291
Railroads, first introduction of locomotives on, 151. Important effects to be expected from their adoption, 155. Imaginary difficulty respecting the progression of carriages on, 160. Various methods resorted to, to remedy this supposed difficulty, 161. One of these methods described, 162. Comparative estimate of the expenses of locomotive and stationary engines, 168. Difficulties arising from changes of level, 192. Their great extension, 206. Comparison of, with turnpike roads, 213. Inclined planes on, 194
Railway speculators, plain rules for, 307
Roads, their resistance to draft, 213. Compared with railroads, 213
Roebuck, Dr., assistance rendered by him to Watt, 87. His embarrassments, 88
Savery, Thomas, obtains a patent for an engine to raise water, 49. His discovery of the principle of condensation, 49. Constructs the first engine brought into operation, 50. Description of, 51. Inefficiency of, 57. Great consumption of fuel necessary in his engines, 60. Different purposes to which he proposed to apply the steam engine, 61. Limited power of his engine, 69
Smeaton turns his attention to the details of the atmospheric engines, 73
Solids converted into liquids by the application of heat, 27
Solomon De Caus, description of the apparatus of, 43
Somerset, Edward, Marquis of Worcester, invention of the steam engine ascribed to him, 45. Description of his contrivance, 45. Similar to Savery's, 46. His "Century of Inventions," 46
Steam carriages, Mr. Gurney's, 216. Mr. Hancock's, 235. Mr. Ogle's, 238. Dr. Church's, 239
Steam, its properties described, 30. Its mechanical power in proportion to the water evaporated, 277. Its volume, 279. Its quantity of heat, 279. Its power in respect of fuel, 280. Its expansive action, how advantageous, 280. Combination of expansion with condensation, 285. High-pressure, its expansive action, 288. Examples illustrative of its mechanical force, 305