INDEX. 



733 



Electrode, soluble, in electrotype process, 

 706 



Electrolysis, 709 



Electro-magnetic machines, 547, 651, 654, 

 659, 660, 666, 671 



Electro-medical apparatus, 722 



Electro-motors, 651, 654, 657 



Electro-plating, 701 718; historical 

 sketch, 701 ; electro-typing, 704 ; gal- 

 vanizing and gold and silver-plating, 711 



Electro-typing, 704 



Elkington's electro-typos, 662 ; electro- 

 plating, 704 



Ellicott's compensation pendulum, 371 



Eisner's improvements in electro-plating, 

 704 



Engerth's goods locomotive engine, 472 



Engines, Steam, (see Steam-engines.) 



Engravings, corrected and reproduced by 

 electrotype, 706, 707, 708 



Enlarging process in photography, 309 



Eolipyle invented by Hero of Alexandria, 

 389 



Erecting telescope, 262 



Ericson's screw-propeller, 452 ; hot-air 

 engine, 506 



Esquimaux, their clothing, 359 



Ether, vapour, and sttam, combined en- 

 gines, 503 



Ethnology, photographic illustrations of, 

 324 



Evans, Oliver, steam-carriage invented by, 

 461 



Exploding apparatus for mines and quar- 

 ries, electro-magnetic, 696 



Explosion of steam-boilers, 500 ; of tor- 

 pedoes, 699 



Express locomotive engines, 473 



F. 



Faraday, improvements in submarine tele- 

 graphy, 616 ; discovery of the induction 

 of electric currents, 6iiO 



Farcot's steam-boilers, 406 



Fargier's discoveries in heliography, 317 



Fifes, 168, 170 



Fire and fireplaces, 334, 337 



Fire-balloons, 89 



Fire-clay for stoves, 345 



Fire-engines, 58, 408 



Fitzgerald, Keane, improvements in steam- 

 engines, 444 



Fizeau's improvements on the daguerreo- 

 type, 294 ; inventions in heliography, 

 313 



Flageolets, 168 



Flutes, 120, 168, 170, 173 



Flywheel of steam-engine, 422, 426, 427 



Foculus, Roman, 335 



Force-pumps, 51, 58 



Foucault, Leon, proof of the rotation of the 

 earth, 26 ; heliostat, 215"; siderostat, 

 216 ; improvements in mirrors for tele- 



scopes, 273 ; electric-lamp regulator, 

 674, 67-7, 680 



Fountains, 44, 81 



Foy and Breguet's needle telegraph, 556, 

 568 



Franco-German "War, employment of bal- 

 loons, 99 



Franklin's invention of lightning-conduc- 

 tors, 532 



Freitel's printing-telegraph, 583 



Fresnel, lenticular apparatus applied to 

 lighthouses, 223, 230, 701 



Friedland, French steam frigate, 456, 458, 

 459 



Froment's dial telegraph, 571 ; relay 

 attached to the Morse telegraph, 578 ; 

 electric regulator, 636 ; electric clock, 

 640 ; electro-magnetic engine, 654 ; 

 electric dividing- engine, 657 



Frot, M., ammonia engine, 504 



Fryer's double-action pump for compressing 

 air, 72 



Fii j ls, use and heating power of, 354 



Fulton's improvements in steam navigation, 

 447, 448 



Furnaces of steam-engines, 397, 399, 400 



Furniture, artistic, ornamented by electro- 

 plating, 716 



0. 



Galileo, oscillations of the pendulum, 23 ; 



telescope, 251, 254, 255 

 Galton, Douglas, ventilating fireplace, 



343 



Galvanic chain, Pulvermacher's, 719 

 Galvanized iron wire for telegrapl s, 607, 



610, 613 

 Galvanizing and gold and silver plating, 



711 

 Galvanometers, used in electric telegraphy, 



565, 580 ; Thomson's, 617, 619; Sch'wei- 



ger's, 660 ; in electric room at Opera 



House, Paris, 682 

 Gambey's declination compass, 521, 522 ; 



heliostat, 215 

 Garnerin's balloon ascent with parachute, 



99 



Garnier's electric regulator, 634, 638 

 Garret's road-locomotive, 478 

 Gas, its employment and heating-power, 



355 



Gas-balloons, 91, 92 

 Gas-engines, 509 

 Gas heating apparatus, 351 

 Gas-pumps, 63 



Ganger, on fire and fireplaces, 341 

 Gauss' object-glass for telescopes, 253 ; 



discoveries in electric telegraphy, 545 

 Gay-Lussac'-s centesimal alcoholometer, 



38 ; meteorological experiments with 



balloons, 102 ; report ou the invention 



of the daguerreotype, 298 

 Gemini, telescopic view of stars in, 261 



