Steam saw-mill, 291 Steam whistle, 218 Steel pen, 184 Stephenson, 185, 218 Stereoscope, 244 Stereotyping, 164 Sternberg, 295 Stethoscope, 197, 246 Stevens, 181 Sturgeon, 217 Suez Canal, 237 Sulphite process, 276 Syphon, 286 Syria, 45 T Tainter, 302 Talbot, 221 Talleyrand, 261, 262 Taoism, 39, 263 Taupenot, 265 Telephone, 287 Telescope sight for ships' guns, 312 Telescope, 135, 136 Tesla, 303 Themistocles, 61 Thermit welding, 327 Thermometer, 142 Thermopile, 200, 201 Thermos bottle, 201 Thompson, Elihu, 302 Thomson, Benjamin, 212 Thomson, Sir William, 286 Thorium, 314 Threshing-machine, 177 Thurber, 231 Tilghman, 276 Time-lock, 241 Torpedoplane, 328 Torricelli, 142 Toulon, 177 Trafalgar, 195 Triger, 221 Tubular boiler, 214 Tungsten electric light, 327 Turtle for printing presses, 245 Twine-binder, 286 Typewriter, 231, 276 Typhoid bacillus, 295 Tyre, 72, 73 Tyrian Dyes, 48 U Ulm, 194 Uranium, 314 Use of collodion in photography, 245 Uxian pass, 74 V Van Depoele, 302 Vasco da Gama, 128 Veneti, 90 Vercingetorix, 93, 94 Vieille, 273 Villeneuve, 193, 194 Visibility of objects, 116, 117 Volta, 138, 170, 171 Voltaic arc, 182, 183 Vulcanizing rubber, 220 W Walker, 213 Walkers, 304 War-chariot, 42 Washington, 173 _et seq_ Watch, 162 Watch-making machine, 245 Water-gas, 221 Watt, 154 _et seq_ Webb-feeding printing press, 274 Wedgwood, 181 Wegmann, 286 Wells, 234 Welsbach, 302 Westinghouse, 278, 285 Wheatstone bridge, 285 Wheatstone, 220 Wheel, 42, 43 Whitehead torpedo, 275 Whitney, 177 Wilde, 275 Willis, 285 Wireless telegraph, 305, 306 Wöhler, 213 Wood pulp, 247 Wood, Henry A. Wise, 318, 327 Woodruff, 265 Worm, 245 Wright, Orville and Wilbur, 326 X X-Rays, 293, 312, 313 Xerxes, 60 Z Zankerode, 293 Transcriber's Notes: Punctuation and spelling were made consistent when a predominant preference was found in this book; otherwise they were not changed. Simple typographical errors were corrected; occasional unbalanced quotation marks retained. Inconsistent hyphenation, e.g., "co-operation" and "cooperation", has been retained unless one form predominated. Ambiguous hyphens at the ends of lines were retained. Page 174: "and sheet force of will" is misprint for "sheer". Page 249: Several colons would be semi-colons in modern practice. Index was not well-alphabetized; corrected here. Diacriticals and ligatures have been alphabetized as plain letters. End of the Project Gutenberg EBook of Invention, by Bradley A. Fiske