340 



INDEX. 



Electrical Applications, 263. 



Resistance, Unit of, 239. 

 Electric Accumulator, 257. 



Attraction and Repulsion 



(Law of), 223. 

 Battery, 225. 

 Car, 257. 

 Currents, 237. 

 Induction, Theory of, 238. 

 Light, 182, 225. 

 Machine (First), 216 ; 

 (Second), 216, 220, 294. 

 Metallurgy, 239. 

 Pile, 225. 

 Plating, 239. 

 Telegraph, 231, 240, 283, 



286, 294. 



Thermometer, 236. 

 Typing, 239. 

 Electricity, 57,61,98, 243, 272-274, 



283, 285. 

 Electricity and Lightning (Identity 



of), 221. 



Steam, Great 



Agents of Pro- 

 gress, 226. 

 Animal, 224. 



Application of, to Mole- 



cules, 258. 



,, Benefits from, 294. 



an Illuminant, 182. 



Statical Properties of, 



226. 



Theory of, 221. 



Two Kinds of, 216, 220, 



221. 



Velocity of, 240. 



Electro-chemical Theory, 181, 182. 

 Electro-chemistry, 236. 

 Electrology, Definition of, Appen- 

 dix AA. 



Electrolysis, 181 ; Law of, 238. 

 Electro-magnet, 231. 

 Electro-maznetic Action and Waves 



258. 



Electro-magnetism, 232. 

 Electrophorus, 225. 

 Elements, Chemical, 242, 248, 250, 

 251, 259. 



Elements, Chemical, Discoveries of, 



see Discoveries. 

 Elements, Chemical, Mendelejeff, 



188. 



Missing, 187. 



,, Williams, 186. 



Eminent Men of Science (Table of), 



Appendix AA. 

 Enamelling, 53. 

 Encke [Astron.], his Comet, 209, 



229, 255. 



Encyclopaedia, 39, 71. 

 Endlicher [Botanist], 115. 

 Energy, 283. 



Conservation of, 244. 

 Dissipation of, 254. 

 Mechanical, 195. 

 of Light, 242. 

 Reversibility of, 195. 

 Solar, 246. 

 Transmission of, 264. 

 Enfranchisement, 68. 

 Engine, Fire, Steam, 23 ; Railway, 



261. 



Engineering, 262. 

 England, 279 ; the Leading Country 



in Science, 282, 283. 

 English Ancestry, 283. 

 Greatness, 284. 

 Engraving, 53. 

 Ephemerides, 54, 55 ; of Jupiter's 



Satellites, 199. 

 Epicycles, 24. 

 Equality and Justice, 301. 

 Equinoxes, 5. 

 Equivalent (Mechanical, of Heat), 



243. 



Erasistratus, 22. 

 Eratosthenes, 23. 

 Erigena, 47. 

 Errors, Law of, 196 ; Least Square, 



of, 195. 



Esthonian Theory, 149. 

 Ether, 211, 217, 229, 255. 

 Euclid, 22 ; " Geometry," 54. 

 Eudiometer, 225. 

 Eudoxus, 13, 21. 



Euler [Math.], 194; [Physicist], 227. 

 Euphone, 227. 



