INDEX. 



Abbeville, human remains at, 356. 

 Aborigines of America, 362. 

 Abstraction, power of, the gift of man, 



376. 

 Acalephs, 316. 



Acceleration of earth's rotation, 403, 405. 

 Accumulation of brine, 298, 299. 



" of petroleum, 282, 287, 291. 



Acipenser, 166. 

 Actinice, 326. 



Additions to the continent probable, 230. 

 Adhemar on glacial theory, 442. 

 Adirondacs, rocks of, 78. 

 Adits in mines, 440. 

 Advent of man in Europe, 354. 

 Mpiomis, 368. 

 Agassiz, L., on glacier phenomena, 221. 



" on coral animals, 326. 



" on the Florida Reef, 327. 



Age of Eeptiles, 173. 



" of Mammals, 199. 

 Ages, periods, and epochs, 133. 

 Ages cf prehistoric man, 353, 354. 

 Agents in terrestrial transformations, 35. 

 Aggregations of cosmical matter, 427. 

 Agriculture in primeval times, 364. 

 Air-breathers, conditions of existence of, 



151. 

 Air-breathers, earliest, 166. 

 Aleutian Islands, 25. 

 Alleghany Mountains in embryo, 94. 



" ' " upheaved, 162, 310. 



" " denuded, 399. 



Amazon River, 235. 

 America populated from Asia, 362. 

 American Continent, see Continent 



" Desert, 345. 

 Amiens gravel, 367. 

 Amoeba princeps, 70. 

 Ammonites, characters of, 119. 



" Mesozoic, 176. 



Ammonites canaliculatus, 119. 

 Amphibians, 317. 

 Amphiccelian vertebrae, 188. 

 Amphitheatre at Pictured Rocks, 87. 

 Analogies sometimes unsafe, 325. 

 Andreasberg mines, 439. 

 Andrews, E., on antiquity of man, 367, 



368. 

 Andrias Scheuchzeri, 193. 

 Animals in isolated lakes, 237. 

 Annus Magnus, 382, 383, 442. 

 Antagonism of Nature's energies, 397. 



Antarctic Continent, 221. 

 Anticipations of man in Nature, 332. 

 Antiquity only relative, 414. 



" of man, 367. 

 Appalachians upheaved, 162, 310. 

 " denudation of, 340. 



Aquatic habits and relative rank, 323c 

 Arabians on secular catastrophes, 386. 

 Aral Sea, why salt, 295. 

 Araucaria imbricata, 321. 

 Archceopteryx, 184, 318. 



" references on, 440. 



Arched Rock, Mackinac Island, 248. 

 Archegosaurus, 158. 

 Architecture, mimic, 207. 

 Arctic regions uplifted, 213, 311. 

 Argonauta Argo, 110. 

 Aristotle on eternity of existing order 



386. 

 Art in prehistoric times, 359, 365. 

 Artesian wells, 94. 



" " of Toledo, 242. 



Arthrophycus Harlani, 124. 

 Articulated animals, 101. 



" " order of, 316. 



Asaphus caudatus, 81. 



" gigas, 108. 

 Ashley River, human relics at, 356. 

 Assorting action of water, 229, 232. 

 Asteroids and world harmonies, 330. 

 Asterolepis, 99. 

 Astrseans, 327. 



Astronomy and its wonders, 421. 

 Athens marble, 125. 



Attitudes of man and other animals, 378. 

 Auk, the Great, 368. 

 Aurochs, 360. 



Austen on human remains, 355. 

 Australian quadrupeds, 323. 

 Aymard on primeval man, 356. 

 Azoic scenes, 65. 

 Aztecs on cycles, 3S7. 



Baculites, characters of, 119. 

 Baculites ovatus, 117. 

 Bad Lands of Dakotah, 205, 206, 296. 

 Barrande on Trilobites, 80. 

 Basaltic rocks of Fingal's Cave, 34. 

 Basin of Middle Tennessee, 341, 342. 

 Basins of lakes excavated, 220, 224. 

 Bathygnathus borealis, 178, 184, 188. 

 Batrachians, 167. 

 Beaches, ancient, 230. 



