246; general delineation of its re- 

 action, 199 201; fantastic views on 

 its interior, 1 63. 



Earthquakes, general account of, 199 

 214; their manifestations, 199 

 201; of Riubamba, 199, 201, 203, 

 209, 211; Lisbon, 206, 207, 209, 

 210; Calabria, 201; their propaga- 

 tion, 199, 208, 209 ; waves of com- 

 motion, 200, 201, 208, 209; action 

 on gaseous and aqueous springs, 

 206,219,221; salses and mud vol- 

 canoes, 221 224; erroneous popu- 

 lar belief on, 201203; noise ac- 

 companying earthquakes, 203206; 

 their vast destruction of life, 206, 

 207; volcanic force, 210, 211 ; deep 

 and peculiar impression produced on 

 men and animals, 211, 213. 

 Ehrenberg, his discovery of infusoria 

 in the polishing slate of Bilin, 141; 

 infusorial deposits, 255, 263: bril- 

 liant discovery of microscopic life in 

 the ocean and in the ice of the polar 

 regions, 350; rapid propagation of 

 animalcules and their tenacity of life, 

 352 354; transformation of chalk, 

 263. 



Electricity, magnetic, 182 197; con- 

 jectured elfctric currents, 183, 184; 

 electric storms, 189; atmospheric, 

 342345. 

 Elevations, comparative, of mountains 



in the two Hemispheres, 6, 7. 

 Sncke, 91; his computation that the 

 showers of meteors, in 1833, pro- 

 ceeded from the same point of space 

 \n the direction in which the earth 

 was moving at the time, 106. 

 Ennius, 63, 64. 

 Epicharmus, writings of, 54. 

 Equator, advantages of the countries 

 bordering on, 11, 12, 13; their or- 

 ganic richness and fertility, 13, 14; 

 magnetic equator, 176 178. 

 Erman, Adolph, on the three cold 

 days of May (llth 13th), 121; 

 lines of declination in Northern 

 Asia, 175; in the southern parts of 

 the Atlantic,181 ; observationsduring 

 the earthquake at Irkutsk, on the 

 non-disturbance of the horary 

 changes of the magnetic needle, 203. 

 Eruptions and exhalati<ms (volcanic), 

 lva, gaseous and liquid fluids, hoi 



mud, mud mofettes, &c., 152. 206- 

 272. 



Ethnographical studies, their import 

 ance and teaching, 366368. 



Etna, Mount, its elevation 6, 226; sup- 

 posed extinction, by the ancients, 

 225 ; its eruptions from lateral fis- 

 sures, 227; similarity of its zones &f 

 vegetation to those of Ararat, 356. 



Euripides, his Phaeton, 110. 



Falconer, Dr., fossil researches in the 

 Himalayas, 281. 



Faraday, radiating heat, electro-mag- 

 netism, &c., 29, 172, 182; brilliant 

 discovery of the evolution of light, 

 by magnetic forces, 188. 



Farquharson, on the connection of cir- 

 rous clouds with the Aurora, 191; 

 its altitude, 194. 



Fedorow, his pendulum experiments, 

 159. 



Feldt, on the ascent of shooting stars, 

 111. 



Ferdinandea, igneous island of, 241. 



Floras, geographical distribution of, 

 359, 360. 



Forbes, Professor E., reference to his 

 Travels in Lycia, 220; account of 

 the island of Santorino, 240. 



Forbes, Professor J., his improved seis- 

 mometer, 200 ; on the correspondence 

 existing between the distribution of 

 existing floras in the British islands, 

 357, 358 ; on the origin and diffusion 

 of the British flora, 363. 



Forsier, George, remarked the climatic 

 difference of temperature of the 

 eastern and western coasts of both 

 continents, 327. 



Forster, Dr. Thomas, monkish notice 

 of ' Meteorodes,' 111. 



Foster, Reinhold, pyramidal configura- 

 tion of the southern extremities of 

 continents, 294. 



Fossil remains of tropical plarfts and 

 animals found in northern regions, 

 26, 27, 272 288; of extinct vege- 

 tation in the travertine of Van 

 Piemen's Land, 221 ; fossil human 

 remains, 250. 



Fourier, temperature of our planetary 

 system, 145, 164, 165, 169. 



Fracastoro, on the direction of the taill 

 ) of comets from the sun, 86. 



