342 



INDEX. 



Gas, 268. 



Battery, 242. 



Lighting, 261. 

 Gases, Coefficient of Expansion of, 



233- 

 Fundamental Importance 



of, 177- 

 Law of Compressibility of, 



233- 



Liquefaction and Solidifica- 

 tion of, 255. 



Gassendi [Astron.], 198. 

 Gastraea Theory, 147. 

 Gaston Phoebus, 44. 

 Gauss [Math.], 196, 240. 

 Gautama, Syllogism of, 10. 

 Gay-Lussac [Chemist], his Law of 



Volumes, 182; [Physicist], 232. 

 Geber, see Giaber. 

 Geber Al Batani, 33. 

 Geber (of Seville), Observatory, 34. 

 General Progress, 289. 

 General Results of Science, xvi., 



285. 



Generating Functions, 195. 

 Geoffrey St. Hilaire [BioL], held 



the Doctrine of the Mutability 



of Species, 131. 

 Geoffrey St. Hilaire (Isidore) [Biol.], 



131* 

 Geographers, Discoveries of, see 



Discoveries. 



Geography, 24, 26, 41, 44, 56, 269, 

 281 ; (Physical), 167 ; Definition 

 of, Appendix AA. 

 Geological Laws, 165, 283. 

 Geologists, Discoveries of, see Dis- 

 coveries. 

 Geology, 39, 273, 281 ; Definition 



of, Appendix AA. 

 Geology, British, 162. 



Comparative, 163. 

 Early, 159. 

 Experimental, 161. 

 General Remarks on, 170. 

 Geometry, Analytical, 193. 

 Descriptive, 195. 



in Egypt, 5, 22, 195, 196. 

 Signs in Pure, 196. 



Gerbert, 44, 47, 69 (note). 



Gerhardt [Chemist], his Theory of 

 Types, 185. 



Germany, 279, 282. 



Gesner, 61, 269. 



Ghetaldi, 59. 



Giaber, Founder of Chemistry, 

 Chemical Manipulation and Ap- 

 paratus, Alcohol, Gases, Oxida- 

 tion, Strong Acids, 37, 248. 



Gilbert, 57, 98, 283. 



Gioja d' Amalfi, 52. 



Giorgione, 64. 



Glacial Period, 167-169. 



Glaisher [Physicist], 224. 



Glass, 1 6, 268. 



Glazed Pottery, 53. 



Globe (The), 41. 



Globes, 43. 



Gnats' Wings, Flapping of, 257. 



Gnomon (The), 15, 24, 266. 



Goethe [Botanist and Biologist], 



115. 



Golden Number, 21 (note). 

 Goniometer, 227. 



Government (Religious), 301, 302. 

 Graham [Chemist], his Law of 



Diffusion, 184; his Process of 



Dialysis, 185. 



Grammar, Comparative, 152. 

 Granada, 29. 



Grand Laws discovered, 271. 

 Gravitation, Laws of, 200; Uni- 

 versal, 206, 272. 

 Gravity, Centre of, 36, 60. 

 Force of, 36. 



Specific, 23, 59. 

 Gray, 264.. 

 Great Men in the Middle Ages, 65, 



66 (note). 

 Great Pyramid, 6. 

 Great Schism caused the Delay of 



the Revival, 94. 



Greatness of Xlllth Century, 67. 

 Greek, 47 (note). 



Discoveries, 7. 



Exodus to Italy, 92. 

 Science passes to the 

 Persians and Arabs, 28. 



