582 



INDEX, 



Alps, crustal shortening involved 

 in formation of, i, 549, 576 



structure, i, 504. 5°7 

 Alveolina, iii, 241 

 Amalitzky, V., cited, ii, 630, 646, 



650 

 Amber, i, 646; iii, 114 



Oligocene, iii, 251 

 •\mberleya dilleri, iii, 136 

 Amblypoda, iii, 232, 233 

 Ameghino, F., cited, iii,. 220 

 American graptolites, ii, 345 

 Amethyst, i, 460 

 Amherst schist, iii, 546 

 Amia, iii, 87 

 Ammonites biplex, iii, 93 



concavus, iii, 93 



Cretaceous, iii, 187 190 



Jurassic, iii, 80 



Lower Jurassic, iii, 91 



macclintocki, iii, 93 



Middle Jurassic, iii, 91 



Permian, ii, 653 



Triassic, iii, 50, 52, 56 



Upper Jurassic, iii, 92 



wosnessenski, iii, 93 

 Ammonoidea, iii, 52 

 Amphibians, Carboniferous, ii, 

 606 



Eocene, iii, 240 



Miocene, iii, 290 



Mississippian, ii, 537 



Permian, ii, 646 

 Amphibole, i, 460 

 Amphiboles, i, 400 

 Amphidetus, iii, 294 

 Amphistegina, iii, 294 

 Amusium, iii, 91, 92 

 Amygdaloid, i, 411, 467 

 Amyzon formation, iii, 210 

 Analcite, i, 460 



Analyses, American river-waters, 

 i, 107 



American spring- waters, i, 235 



rain-waters, i, 107 



river-waters, i, 106, 107, 108 



sea- water, i, 324 



waters of enclosed lakes, i, 

 392 

 Anamorphism, i, 446; ii, 142 

 Anamosa limestone, iii, 558 

 Anaptomorphus, iii, 239 

 Anatina austinensis, iii, 135 

 Ancestral sun, ii, 51 

 Anchippus, iii, 253, 286 

 Anchisaurus, iii, 43 



colurus, iii, 44 

 Anchyloceras, iii, 134 

 Ancilla, iii, 294 

 Andalusite, i, 460 

 Anderson, F. M., cited, iii, 160 

 Anderson sandstone, iii, 549 

 Andes, snow-line in, i, 246 

 Andesine, i, 400, 460 

 Andesite, i, 467 

 Andrews, C. W., (and Beadnell,) 



cited, iii, 284 

 Aneimites, ii, 595 

 Angisoperms, i, 657 

 introduction of, iii, 130 



Angstrom, K., cited, ii, 671, 672; 



iii, 444 

 Angulus, iii, 292 

 Anhydrite, i, 460 

 Animal kingdom, geologic con- 

 tribution of, i, 658 63 

 synopsis of, i, 659 

 Animikean system, ii, 183-191 

 composition of, ii, 183 

 deformation and erosion of, ii, 



185 

 distribution of, ii, 186 

 igneous rocks of, ii, 184 

 Menominee region, ii, 187 

 Mesabi region, ii, 189 

 metamorphism of, ii, 185 

 sections of, ii, 186 

 thickness of, ii, 184 

 Vermilion region, ii, 190 

 Annelids, Devonian, ii, 467 

 Ordovician, ii, 361, 363 

 Upper Cambrian, ii, 299 

 Annularia longfolia, ii, 594 

 Mississippian, ii, 537 

 spenophylloides, ii, 594. 597 

 Anomalina ammonoides, iii, 241 

 Anomalocrinus incurvus, ii, 



359 

 Anomodontia ii, 649, 651; iii, 



42 

 Anoplotheca flabellites, ii, 459 

 Anoplotheres, Miocene, iii, 284 

 Anorthite, i, 460 

 Anorthosite, i, 467 

 Antarctica, snow-line in, i, 246 

 Ant-eaters, Pliocene, iii, 321 

 Antecedent streams, i, 169, 173 

 Anthozoa, Cambrian, ii, 286 

 Anthracite, i, 426, 460 



origin of, ii, 577 

 Anthracotheres, Miocene, iii, 284 

 Anthracotherium, iii, 253 

 Anthrapalaemon gracilis, ii, 61 1 

 Anthropopithecus troglodytes, iii, 



326 

 Anticlinal valleys, i, 159 

 Anticline, i, 504 



plunging, i, 155, 157, 506 

 Anticlinor'.a, i, 504 

 Anticosti series, ii, 275 

 Antimony, i, 460 

 Antrim shales, iii, 553 

 Aparchites minutissimus, ii, 



35i 

 Apatite, i, 460 

 Apatosaurus, iii, 98, 100 

 Ape, Indian, iii, 326 

 Aphanite, i, 451, 452, 467 

 Aphorrhais prolabiata, iii, 189 

 Apishapa shale, iii, 155, 206 

 Apison shale, iii, 549 

 Aplite, i, 415 

 Appalachia, iii, 1 

 Appalachian coal-field, ii, 546 

 river, i, 173 



sections of Ordovician, ii, 315 

 Appalachians, crustal shorten- 

 ing due to folding, i, 549; ii< 

 125 

 extent of piracy in, i, 169 



Appalachians, peculiarities of 

 drainage, i, 169 



rejuvenation of streams in, i, 

 165 

 Aptian stage, iii, 132 

 Aqueous rocks, i, 467 

 Aquia formation, ni, 198 

 Aquitanian stage of Oligocene. 



iii, 250 

 Arabf llites ovalis, ii, 363 



cornutus, 363 

 Arachnoids, Devonian, ii, 495 

 Arago beds, iii, 202, 264 

 Aragonite, i, 460 

 Aralia, iii, 133 



Arapahoe formation, iii, 156, 158 

 Araucanoxylon, ii, 601 

 Arbuckle limestone, iii, 563 

 Area (Scapharca) staminea, iii, 



292 

 Arch of earth's crust, strength 



of, i, 582 

 Archaeocyathus rensselaericus, 

 ii, 287 



minganensis, ii, 363 

 Archaeopteris bochsiana, ii, 593 



Mississippian, ii, 537 

 Archaeopteryx macrura, iii, 102, 



104 

 Archean, ii, 133-161 



and planetesimal hypothesis, 

 ii, 137 



bearing on origin of earth, ii, 

 155 



complex, i, 18 



composition of, ii, 140-143 



defined, ii, 138 



delimitations of, ii, 138, 160 



distribution of, ii, 145 



early views concerning, ii, 156 



European, ii, 158, 159 



general characters of, ii, 140 



intrusions in, ii, 141, 142, 143, 

 154 



map of, ii, 147 



metamorphism of, ii, 144 



origin of, ii, 140-145, 154 



structure of, ii. 130, 131, 153 

 Archelon, iii, 181 

 Archeocalamites, Devonian, ii, 



597 

 Archeozoic diastrophism, ii, 144 



eon, ii, 83 



era, i, 19; ii, 133 



duration of, ii, 160 



life of, ii, 159 

 Archimedes, ii, 531 



limestone, ii, 562; iii, 560 



swallovanus, ii, 532 

 Archinacella cingulata, ii, 353 

 Arctic Regions, Cretaceous of., 

 iii, 129 



Jurassic of, iii, 77 



Miocene of, iii, 281 



Mississippian of, ii, 425 



Oligocene of, iii, 251 



Ordovician of, ii, 342 



Pennsylvanian of, ii, 556, 588 



Permian of, ii, 630 



Triassic of, iii, 37 



