INDEX 



PAGE 



A 



Abbot 116 



Acanthotelson Stimpsoni 396 



Acanthoteuthis antiquus 433 



Acephals, or Bivalves 313 



Acer trilobatum 509 



Acervularia Davidsoni 331 



Acid, humus 4 



Acidaspis crosotus 323 



Acrodus minimus 418 



nobilis 436 



Acrogens, age of 282, 345 



Actinoceras 318 



^Epiornis 605 



iEschna eximia 435 



Agassiz, A 134, 160 



Louis , 157, 481 



Lake 556 



Agencies, aqueous 9 



atmospheric 3 



igneous 83 



organic 140 



Age of acrogens and amphibians 345 



fishes 327 



invertebrates 296 



mammals 501 



man 603 



reptiles 414 



Ages , 282 



Agnostus interstrictus 299 



Aitkin 63 



Alecto auloporoides 310 



Alethopteris lonchitica 364 



Massilonis 363 



Whitneyi 459 



Alkaline lakes 79 



Allorisraa pleuropistha 395 



ventric s:i 395 



Alnus grewiopsis 497 



Alps 



260 



Amblypterus macropterus 399 



Ambonychia bellistriata 316 



American mud-fish 338 



Amia 338 



Ammonites bifrons 431 



cordatus 431 



Chicoensis 482 



PAGE 



Ammonites Humphreysianus . . .- 430 



Jason 431 



Jurassic 430 



margaritanus 431 



Ammophila inferna 514 



Amphibians, age of 282, 345 



carboniferous 400 



Amphitherium 448 



Prevostii 448 



Amygdaloid 215 



Amygdules 215 



Anchithere 541 



Ancyloceras pcrcostatus 482 



Andesite 208 



Andrias Scheuchzeri 520 



Japonica 520 



Andromeda vaccinifolise aftinis 508 



Angiosperms 474 



Animals, Carboniferous 390 



Cretaceous 477 



Devonian 332 



Jurassic 428 



Jura-Trias 453 



Permian 411 



Quaternary 575 



Silurian 304 



Tertiary 511 



Triassic 416 



Annelids, Silurian 321 



Annularia inflata 371 



Anomalocardia Mississippiensis 512 



Anomodonts 419 



Anomoepus minor 455 



Anoplotherium commune, restored 524 



Anoura 400 



Anthophyllitis Devonicus 331 



Anthracite 354 



region of Pennsylvania, map 349 



section, magnified 352 



Anthracopupa Ohioensis 394 



Anthracosaurus 403 



Anthrapalsemon gracilis 396 



Anthrobycosa-antiqua 397 



Anticline 178 



Antiquity of man 607, 618 



Apateon 403 



Apatornis 489 



