INDEX. 



ABIES, fossil species, 193. 



Absence of strata, how accounted 

 for, 133. 



Acanthodidse, 282. 



Acephalous mollusca, 230. 



Acerinse, 195. 



Acetabulifera, 252, 255. 



Acipenser, 278. 



Acipenseridse, 278. 



Acquaintance with geology, its ad- 

 vantages in connexion with 

 mining, 5 ; civil engineering, 10 ; 

 agriculture, 10 ; the arts, 12 ; 

 health, 13 ; mental discipline, 15. 



Acrodas nobilis, 277. 



Acrolepisidse, 282. 



Adapis, 326. 



yElodon, 295. 



yEonia, 262. 



yEshna, 267. 



Brodei, 268. 



grandis (figure), 268. 



liassina, 267. 

 JEthophyllum, 196. 

 Agamise (illustration), 179. 

 Agaricia, 412. 



Agassiz, glacial theory of, 43 ; his 

 arrangement of fossil fishes, 275. 



Age of mountain chains, 151. 



Agnotherium, 338. 



Agriculture, geology applied to, 10. 



Aix, tertiary strata of, 193, 371. 



Albertia, 429. 



Alligator, fossil, 295. 



Alois, 264. 



Alum bay, geological section, 348. 



Amblyarus, 421. 



Amentacsea, 195. 



Ammonite, with snake's head, legend 

 and figure, 23, 24. 



Ammonites (figures), 252, 253,420. 



Amomocarpum, 195 

 Amphiagon, 338. 

 Amphyx, 262. 

 Amyxodon, 338. 

 Anabates, 309. 

 Ananchytes, 384. 



ovata (figure), 225. 

 Anas, 31 3. 

 Anatifida, 259. 



Ancyloceras gigas (figure), 254. 

 Andrias Scheuchtzeri (figure), 304, 



405. 

 Animal kingdom, great divisions of 



the, 212 ; detail, 213 et seq. 



origin of chalk and flint, 383. 

 Annelida dombranchiata, 258 ; 



tubicola, 258. 



Anoplotherium, 324 ; figure, 325. 

 Anomopteris, 185. 

 Anser, 313. 

 Anteates, fossil, 338. 

 Antholites, 194. 

 Anthozoa, 216, 217. 

 Anthracotherium, 324. 

 Anticlinal and agricultural lines 



(illustration), 148. 

 Antilope, 320. 

 Antiquity of the earth, considerations 



on the, 49. 

 Antrimpos, 264. 



Apiocrinites rotundus (figure), 227. 

 Apus, 263. 

 Aquila, 309. 

 Arachnida, 265. 

 Araucaria, glands of the stems of 



the (illustration), 201. 

 Area, 419 ; figures, 362, 387, 419. 

 Archseomys, 336. 

 Archseoniscus, 264. 

 Arched strata (illustration), 141. 

 Archegonus, 262. 



