INDEX. 



This index is to the complete work. The references to Vol. I 

 are to its second edition. Vols. I and II each has an index of its 

 own. 



Abbot, C. G., cited, ii, 677; 



(and Langley), iii, 431 

 Abbot, M. L.,(and Humphreys,) 



cited, i, 106, 202 

 Abbott, C. C, cited, iii, 516 

 Abietinae, iii, 95 

 Abra, iii, 295 

 Abrasion, by ice, i, 281 



by streams, i, 119 



by waves, i, 342 



by wind, i, 38 

 Abrigo limestone, iii, 575 

 Abysmal fauna, i, 671 



life, Devonian, ii, 479 



sea, i, 326 

 Acadian ser.es, ii, 219, 241 

 Acanthasp's, ii, 463 

 Acanthodians, Devonian, ii, 489 

 Accret.on hypothesis, internal 

 temperature on, i, 564, 567 



of earth's origin, ii, 38-78 



recombination of material on, 

 i, 568 

 Acer, iii, 173 



Aceratherium, iii, 253, 289 

 Acidaspids, Onondagan, ii, 467 

 Acondylacanthus gracilis, ii, 520 

 Acrocrinus amphora, ii, 532 

 Acrotreta gemma, ii, 285, 299 

 Actaeon shilohens's, iii, 294 

 Actinocrinidae, ii, 520 

 Actinocrinus, ii, 522 



lobatus, ii, 525 



senectus, ii, 520 

 Actinolite, i, 447, 460 

 Actinopteria textiles, ii, 455 

 Actinopterygians, Devonian, ii, 



489 

 Adacna, iii, 295 

 Adams, C. C, cited, iii, 532 

 Adams, F. D., cited, i, 474; ii 



145. 204 

 Adams, G. I., cited, ii, 562; iii, 



228, 245 

 Adaptations, climatic, of life in 



Pleistocene, iii, 486 

 Adiantes, ii, 595 

 Adirondack region, Proterozoic 



of, ii, 205 

 Adjustment of streams, struc- 

 tural, i, 146, 150 



topographic, i, 162, 163, 197 

 Adobe, i, 467 

 Africa, Cretaceous of, iii, 171 



Devonian of, ii, 448 



Eocene of, iii, 219 



Africa, Jurassic of, iii, 77 



Lower Cretaceous of, iii, 

 129 



Miocene of, iii, 279 



Mississippian of, ii, 517 



Oligocene of, iii, 252 



Pennsylvanian of, ii, 590 



Permian of, ii, 635 



Pleistocene life in, iii, 501 



Pliocene of, iii, 320 



possible origin of placentals in, 

 iii, 224 



Triassic of, iii, 38 

 Aftonian deposits, iii, 387 



interglacial formation, iii, 493 



interglacial stage, iii, 384 

 Agassiz, A., cited, i, 366, 604 

 Agassiz, L., cited, i, 321, 322, 323, 



366 

 Agassizocrinus dactyliformis, ii, 



532 

 Agate, i, 460 

 Agate structure, i, 436 

 Agathaumus, iii, 176 

 Agawa formation, ii, 180 

 Agelacrinidae, ii, 530 

 Agelacrinus, ii, 470 

 Agglomerate, i, 434, 467 

 Aggradation, by ice, i, 298 



by streams, i, 2, 177 



by wind, i, 25 



in sea, i, 333, 355 



terrestrial, iii, 296 

 Aggradation deposits, Pliocene, 



iii, 296 

 Aggrading streams, character- 

 istics, i, 179, 187 

 Agitation and CO> of ocean, ii, 



667 

 Agnatha, ii, 482 

 Agnostus interstrictus, ii, 298,299 



obtusilobus, ii, 299 

 Agoniatites vanuxemi, ii, 471 

 Agraulus, ii, 299 

 Agriopoma, iii, 295 

 Air-breathing life, oldest aquatic, 



ii, 529 

 Airy, Sir G., cited, i, 341 

 Aistopoda, ii, 607, 608 

 Ajibik quartzite, ii, 150, 179, 180 

 Alabama, Eocene section of, iii, 

 199 



(and Georgia), section of 

 strata in, iii, 551 

 Alabaster, i, 460 



of Triassic, iii, 34 



Alaska, coal in, map of, iii, 

 203 



Comanchean of, iii, 124 



Cretaceous of, iii, 161 



Eocene of, iii, 203 



Jurassic of, iii, 67 



Miocene of, iii, 270 



Miss'ssippian of, ii, 506 



Oligocene of, iii, 248 



Pennsylvanian of, ii, 556 



Pliocene of, iii, 311 



Silurian of, ii, 390 



Triassic of, iii, 28 

 Albany series (Texas), ii, 563 

 Albertan drift, iii, 384 

 Albertia, iii, 40 

 Albian stage, iii, 132 

 Albite, i, 400, 460 

 Alcostepharus, iii, 92 

 Aldrich.T.H, (and Smith, E A.,) 



cited, iii, 200, 244, 309 

 Alectryonia, iii, 91 

 Alethopteris, Mississippian, ii, 

 537 



Pennsylvanian, ii, 595 

 Alferric rocks, i, 454 

 Algae, geologic contribution of, 



. i.653 



influence on precipitation, i, 

 225 

 Algae and limestone, iii, 121 

 Algonkian, definition, ii, 162 



(see Proterozoic) 

 Alkali-Calcic rocks, i, 458 

 Allegheny series, ii, 542, 557, 



558, 560; iii, 554 

 Allen, J., cited, ii, 595, 596 

 Allen, J. A., cited, iii, 153 

 Allorisima subcuneata, ii, 616 

 Alluvial and talus deposits, iii, 472 

 Alluvial cone, i, 181-3 



growth, i, 181 



levees, i, 182 

 Alluvial deposits, i, 177-96 

 Alluvial fans, i, 181, 183 

 Alluvial plains, i, 181, 184-96 



material of, i, 196 



origin of, i, 184, 185 



piedmont, i, 183 



topography of, i, 196 

 Alluviation, i, 181, 196, 467 



ill-defined, i, 183 

 Alpine glaciers, i, 251 



phase of Triassic, iii, 30 



remnants of Pleistocene life, 

 iii, 489 



581 



