680 



INDEX. 



Atmospheric gases, gathering 

 of, 97 



and gravity, q6 



molecular velocities of, 97 

 Atremata, 356 

 Atrypa hystrix, 478 



reticularis, 409, 453, 478 

 Atrypina imbricata, 455 

 Atwood, W. W,, cited, 252 

 Augusta formation, 500 



series, 501, 561 

 Aulocopina, 408 

 Australia, Cambrian fossils of ,300 



Permian glacial beds of, 632 

 Autoclastic rocks, 204 

 Aux Vases sandstone, 561 

 Aviculopecten carboniterus, 616 



occidentalis, 616 

 Azoic eon, 83 



Backstrom, 216 

 Bacteria, Devonian, 493 

 Baiera, 643 



virginiana, 643 

 Bain, H. F., cited, 337, 502, 542, 



548 

 Bala beds, 342 

 Baraboo quartzite, 206, 207 

 Barrande, J., cited, 271, 341 

 Barren measures, 558, 562 

 Barrois, C, cited, 448 

 Barus, C., cited, 8 

 Barycrinus hoveyi, 525 

 Bascom. F., 214 

 Batesville sandstone, 562 

 Batholiths, Archaean, 131 

 Batocrinus, 522 

 Bayley, W. S., cited, 149, 150, 



176, 178, 179, 180 

 Bays sandstone, 316 

 Beaufort series of South Africa, 



636 

 Becker, G. F., cited, 667 

 Bedford formation, 500, 503, 531 



shale, 560 

 Beecher, C. E., cited, 283, 348, 



35o, 378 

 Beede, J. W„ cited, 621 

 Beekmantown limestone, 310 

 Bellerophon antiquatus, 299, 300 



clausus, 353 



percarinatus, 616 



sublaevis, 533 

 Berea grit, 500, 560 

 Beyer, S. W., cited, 542 

 Billings* E., cited, 280 

 Billingsella coloradoensis, 299, 

 300 



transversa, 285 

 Bilobites variens, 455 

 Bird's-eye limestone, 3*4 

 Birge, E. A., cited, 668 

 Biwabik formation, 189 

 Black Hand formation 500, 560 

 Black Hills, Proterozoic of, 206 

 Black River limestone, 310, 314 

 Blackwelder, E., cited, 250, 273. 



300 

 Blake, W. P., cited, 224 435, 

 552 



Blastoidea. Osage, 52s 



Silurian, 400, 403 

 Blatchley, W. S. (and Ashley), 



cited, 424, 620 

 Blowing Rock gneiss, 152 

 Bluefield shale, 559 

 Bluestone formation, 559 

 Bode's law, 80 

 Bolboden, 650 

 Boone chert, 562 

 Boothia, Ordovician of. 342 

 Bornia, Mississippian, 537 

 Bothriolepis, 485 

 Brachiopods, Cambrian, 285, 297 



Carboniferous, 615, 616 



Chemung, 476, 478 



Devonian, 464, 470 



Genevieve, 531, 532 



Helderbergian, 454 



Kmderhook, 519, 520 



Middle Cambrian, 299 



Mississippian. 523 



Ordovician, 355, 356 



Oriskany, 458, 459 



Osage, 525 



Permian, 653 



Silurian, 401, 403 



Upper Cambrian, 299, 300 



Upper Devonian, 476 



Waverly, 527 

 Brachiospongia digitata, 363 

 Brainard, E. (and Seeley, H. M.>, 



cited, 364 

 Branchiosauria, 607 

 Branner, J. C, cited, 335, 562 

 Branson, E. B., cited, 624 

 Brongniart, C. H., cited, 610 

 Bronteus lunatus, 349 

 Brooks, A., cited, 214, 436, 556 

 Brooks, W. K., cited, 301 

 Brooksella alternata, 287 

 Broom, R., cited, 636, 650 

 Brown, cited, 605 

 Bryophytes, Devonian, 493 

 Bryozoans, Carboniferous. 618 



Devonian, 467, 477 



Genevieve, 531, 532 



Ordovician, 357 



Silurian, 405, 406 

 Bryozoan reefs, 376 

 Buckley, E. R., cited, 317 

 Bumastus trentonensis, 349 

 Burlington beds, 502 

 Byssonychia radiata, 354 



Caelacanthus, 614 

 Calamarians, Devonian 493 

 Calamites, 596, 602 



cistii, 597 



Devonian, 494 



Mississippian, 537 



Permian, 642 

 Calamopitys, 595 

 Calciferous, fauna of, 364 

 Calcium bicarbonate, deposition 



of, 661 

 Callicrinus murchisonianus, 403 

 Callicystis jewetti, 403 

 Calhpteridium, 594, 595, 602 



mansfieldi, 614 



Caiiipteriamm membranaceum, 



614 

 Calliptens, 595, 643. 646 



conferta, 643 

 Callopora pulchella. 358 

 Calvin, S., cited, 337, 424, 432, 



501, 542 

 Calymene callicephala, 349 



magarensis, 403 

 Camarotaechia barrandei. 458 

 Cambrian, Alabama, 247 

 animal life, 279 

 anthozoa, 286 

 Appalachian belt, 254 

 Argentina, 272 

 arthropoda, 280 

 Australia, 272 



basis of subdivisions of, 238 

 brachiopods, 285, 297 

 changes in since deposition, 



267 

 China, 272 

 close of. 269 

 ccelenterata, 286 

 corals, 287 

 Crustacea, 283 

 echinodernrata, 286 

 European, igneous rocks of, 



272 

 faunas, foreign. 299 



succession of, 294 



sudden appearance of, 301 

 foreign, 270 

 fossils, Argentina, 300 



Australia, 272 



India, 300 



Tasmania, 300 

 gastropods, 297 

 Georgian, 247 

 glacial beds in, 272 

 graptolites, 286 

 Great Britain, 270 

 hydrozoa, 286 

 igneous rocks, 252, 272 

 India, 272 

 life of, 276 



ecological adaptation, 292 

 Massachusetts, 265 

 Middle, brachiopods, 298, 299 



cystids, 299 



gastropods, 298 



trilobites, 298 

 mollusca, 283 

 molluscoidea, 284 

 Newfoundland, 244, 263 

 New York, 247 

 North Atlantic, 248 

 North Carolina. 247 

 Northern New Jersey, 265 

 and Ordovician, separation of, 



250 

 outcrops of, 253 



width of, 256 

 Period, 218 



duration of, 273 

 plants, 278 

 protozoa, 287 

 p^eropods, 298 

 Quebec, 247 

 relation of Proterozoic, 218 



