INDEX. 



685 



Hartnagel, C. A., cited, 370, 389, 



390 

 Hartti matthewi, 298, 299 

 Harvey conglomerate, 559 

 Haseltine, R. M., cited, 546 

 Hastings district, 204 

 Hayes, C. W., cited, 254, 268, 

 315, 323. 334. 337, 540, 

 544, 546 (and Ulrich), 316, 

 335, 420, 427, 434, 440 

 Heat from compression, 101 



from condensation, 101 



from infall, 101 



from molecular rearrange- 

 ment, 101 



of interior, 101 



source of, for vulcanism, 100 

 Hector, Sir J., cited, 159 

 Heer, O., cited, 602 

 Helderbergian brachiopods, 454 



cephalopods, 454 



corals, 456, 457 



crinoidc, 456 



cystids, 456 



fauna, 450, 453, 455 



fishes, 457 



formation, 370, 391, 420 



gastropods, 454 



graptolites, 457 



pelecypods, 454 



trilobites, 456 

 Helicotoma planulata, 353 

 Heliolites interstinctus, 409 

 Hemlock formation, 180 

 Henrietta formation, 561 

 Herbertella sinuata, 356 

 Hercynian fauna, 450 

 Herrick, C. L., cited, 623 

 Heterangium, 595 

 Hill, R. T., cited, 435 

 Hinde, G. J., cited, 287 

 Hindia, 408 

 Hinton formation, 559 

 Hipparionyx proximus, 458 

 Holmia broggeri, 296 



fauna, 245 

 Holocystites adiapatus, 403 

 Holograptus richardsoni, 362 

 Holopea sweeti, 299, 300 

 Holoptychius, 488 



flemingi, 488 [409 



Homalonotus delphinocephalus, 

 Honeycomb coral, Silurian, 407 

 Hopkins, T. C, cited, 324, 424, 



562 

 Hormotoma gracilis, 353 

 " Horseback," 575 

 Horsetails, 596 

 Horsts, 129, 131 

 Hoskins, L. M. (and Van Hise, 



C. R.), cited, 258 

 Howchin, W., 273 

 Hunt, T. S., cited, 157 

 Huronian, 175 



close of, 177 



Crystal Falls region, 180 



deformation at close of, 177 



erosion of, 181 



Marquette region, 179 



Menominee region, 179 



Huronian, Mesabi district, 180 



north of Lake Huron, 181 



Penokee-Gogebic region, 180 



sections of, 179 



thickness of, 176 



Vermilion region, 180 

 Hustedia mormoni, 616, 617 

 Hutton, F. W., cited, 159 

 Huxley, T. EL, cited, 538 

 Hybocrinus tumidus, 359 

 Hydreionocrinus acanthoposus, 



616 

 Hydro-atmospheric stage of 



earth's history, 118 

 Hydrospheric stage, initiation of, 



106 

 Hydrozoa, Cambrian, 286 

 Hymenocaris vermicauda, 283 

 Hyolithes, 299, 300 



americanus, 284 

 Hypopnous, 650 

 Hypotheses of earth's origin, 3 



gaseous, 3 



Laplacian, or nebular, 4 



meteoritic, 3, 13 



planetesimal, 3 

 Hypothyris cuboides, 475. 476 



Igneous intrusions and shear 



zone, 130 

 Igneous rocks, Cambrian, 252 



Carboniferous, 588 



Devonian, 439 



gases in, 95 



heavy and light crystals in, 

 121 



Lower Carboniferous, 515 



Silurian, 394 

 Ilkenus americanus, 349 

 Illinois, lead in, 337 



zinc in, 337 

 India, Cambrian fossils of, 300 



Permian of, 634 

 Initial atmosphere, nature of, 



95 

 Initiation of vulcanism, 99 

 Insect life, Carboniferous, 610 



Devonian, 494 



Mississippian, 538 



Ordovician, 346 

 Interior heat, sources of, 99 

 Iocrinus subcrassus, 359 

 Iowa, lead in, 337 



zinc in, 337 

 Iphidea labradorica, 297 

 Iron, in meteorites, 27 

 Iron ore, Lake Superior region, 

 190 



Clinton formation, 377 



Coal Measures, 580 

 Ironwood formation, 186, 188 

 Irving, R. D., cited, 138, 145, 

 157, 182, 193, 195, 197, 205 

 (and Van Hise), 180, 188, 

 198 

 Ischadites, 363 

 Ischyrodonta decipiens, 354 

 Ishpeming formation, 176, 186 

 Isodectes, 650 

 Isostasy, 200, 236 



Isostatic adjustments due to 



gradation, 236 

 Isotelus gigas, 351 

 maximus, 349 



Jaggar, T. A., cited, 206 

 Jefferson limestone, 153 

 Johnston, R. M., cited, 159 



Kalkowsky, E., cited, 518 

 Kanawha formation, 559 

 Kansas section of Permian, 622 

 Karoo formation, 650 

 Kaskaskia fauna, 529 



limestone, 561 



series, 500, 503, 561 

 Katamorphism, 142 

 Kayser, E., cited, 270, 272, 339, 

 391, 448, 515. 5i6, 517, 590, 

 627, 628, 630, 634, 635, 639 

 (and Lake), cited, 271, 444 

 Keeler, C. C, cited, 43 

 Keith, A., cited, 151, 152, 214, 



254, 437 

 Kelvin, Lord, cited, 4, 8, 22, 52 

 Kemp, J. F., cited, 205 

 Keokuk formation, 561 

 Kessler limestone, 562 

 Keweenaw peninsula, geology of, 



193 

 Keweenawan, 192 



composition of, 192 



deformative movements of 

 194 



thickness of, 192 

 Keyes, C. R., cited, 250, 433, 501 



542, 553, 575 

 Kinderhook brachiopods, 519 



cephalopods, 521 



corals, 521 



crinoids, 519 



fauna, 519, 520 



gastropods, 521 



pelecypods, 521 



series, 500, 501, 561 



trilobites, 521 

 Kindle, E. M., cited, 386 

 King, C, cited, 210, 250, 308, 



322, 435 

 Kitchi schist, 149 

 Knife Lake slates, 150, 180 

 Knight, W. C, cited, 435, 505, 



553, 621, 624 

 Knorria, Mississippian, 537 

 Knox limestone, 316 

 Kokomo limestone, 389 

 Kona dolomite, 150, 179 

 Koto, Dr., cited, 159 

 Krogh, A., cited, 666, 667 

 Kiimmel, H. B. (and Weller, 



S.), cited, 266 

 Kupferschiefer, 629 

 Kutorgina cingulata, 297 



Labrador Archean, 146 

 Labyrinthodonta, 607 



Mississippian, 538 

 Lake, P. (and Kayser), cited 

 271, 444 



