806 



INDEX. 



Hornstone, in Oriskany, 241. 



origin of, 257, 265. 

 Horse, 114, § 495, 505,' 506-510, 

 564, 565, 567, 568, 571, 572, 

 576, 577, 601. 



first, 505. 

 Horse-shoe crab, 122,§ 333. 

 Horse-tails, 327§ 

 Horton series, 296. 

 Hot-springs, 692, 719, 729. 



deposits from, 692, 693, 721. 



life of, 611. 

 Hot waters, action of, 453. 

 Houghite, 157. 

 Housatonic Valley, sections 



across, 213.* 

 Hubbard, O. P., on Triassic coal, 



406. 

 Hudson River, in existence, 287. 

 Hudson River epoch, 164. 



shales, 195, 196. 



slates, Calciferous in age, 196. 



valley, submarine continua- 

 tion of, 422* 540, 673. 

 Human bones, analysis of, 60. 



relics, 573.* 

 Humboldt Jits., 453, 751. 



in the Mesozoic, 486. 

 Humming-birds, 610. 

 Humphreys and Abbot, on the 

 Mississippi River delta, etc. , 

 636, 648, 652, 669. 

 Hunt, E. B., on Carboniferous 



temperature, 353. 

 Hunt, T. S:. age of lead veins, 

 151. 



analyses by, 60, 61, 71, 73, 74. 



anorthosyte, 69. 



Archaean origin of later rocks, 

 161. 



carbon in Archaean, 157. 



carbonic acid disintegrating 

 rocks, 156. 



decomposition of rocks, 156, 

 687, 696. 



Eozoon, 158. 



igneous Archaean, 157. 



moisture in rocks, 656. 



mountain-making, 749. 



white trap, 76. 

 Huron group, 376, 377. 

 Huronia vertebralis, 209. 

 Huronian period, 159. 



fossils in, 167. 

 Huttonia, 348. 

 Huxley, T. H., fossil man, 575. 



Eosaurus, 343. 



Rhizopod* of N. Atlantic, 615. 

 Hyaena, 519.§ 520. 



crocuta, 564. 



spelasa, or Cave Hyaena, 563. 

 Hysenarctos, 519, § 520. 

 Hyaenodon, 511, 519. 



dasyuroides, 518. § 



leptorhynchus, 5i9. 

 Hyatt, A., on Beatricea, 228. 



on evolution, 604. 

 Hybocrinus, 204. 

 Hybodus major, 429. 



minor, 262,* 428. 



Mougeoti, 429. 



plicatilis, 262*428, 429. 



reticulatus, 449. 



strictus, 450. 



subcarinatus, 450. 

 Hybodonts, 263,§* 304, 308, 

 343, 475. 



range of, in time, 388.* 589.* 

 Hydra, 117,* 130.§* 



Hydraulic limestone, 75. § 



analyses of, 233, 237. 

 Hydrogen, f>2.§ 

 Hydroids, 130.§* 

 Hydromica, 54. § 



slate, 69,§ 729. 

 Hydrotalcite, 157. 

 Hydrous aluminous series, 73. § 



magnesian series of rocks, 

 72.§ 

 Hyena, 506, 564,571,576. 

 Hylasosaur, 338,§ 445, § 450. 

 Hylerpeton Dawsoni, 343. 

 Hylonomus aciedentatus, 343. 



Lyelli, 343. 



Wymani, 343. 

 Hymenocaris vermicauda, 



180.* 

 Hymenophyllites, 330. 



Clarkii, 297. 



furcatus, 331. 



Gersdormi, 271. 



Hildrethi, 326* 330, 331. 



obtutilobus, 271. 



spinosus, 331. 

 Hymenopters, 441, 484. 

 Hyolites, 208. 



Americanus, 178. 



gregarius, 178. 



impar, 178. 

 Hyopotamus, 511, 519. 



bovinus, 519. 

 Hypanthocrinus decorus, 229, 



247. 

 Hypersthenyte, 70, § 736. 

 Hypnum, 616. 

 Hyposaurus, 338.§ 



Rogers!, 467. 



ferox, 467. 

 Hypostome, 174. § 

 Hyposyenyte, 70. § 

 Hyrachyus, 504. § 



eximius, 510. 



implicatus, 510. 



princeps, 5i0. 

 Hyracodon, 511. 



Nebrascensis, 506,* 507, 511. 

 Hyracothere, 516. 

 Hyracotherium leporinum, 518 

 Hyrax, 510. 

 Hystrix, 511, 520. 



Ibex, 572. 

 Ibis, 516. 

 Ice, 737, 740. 



of rivers and lakes, effects 



of, 674. 

 See, further, Glaciers. 

 Icebergs, origin and action of, 

 535,686. 

 transported by the Labrador 



current, 534, 665. 

 transportation of stones by, 

 534, 665, 666. 

 Iceberg theory of the Drift, 534, 



539. 

 Iceland, geysers of, 719. 



glaciers in, 675. 

 Ichthyocrinus levis, 226,* 229, 



248. 

 Ichthyodectes, 467. 

 Ichthvornis, 468. 

 Ichthvosaurus, 339,$ 343, 428, 

 429, 443, 449, 450, 474, 475, 

 476, 484. 

 Arctic, 452. 

 communis, 442,* 449. 

 intermedius, 449. 

 tenuirostris, 449. 



Idaho, Jurassic in, 431. 



Potsdam in. 182, 184. 



Quebec in, 182,184. 



Subcarboniferous in, 296. 



terraces in, 549. 

 Idocrase, 726. 



Igneous action in Archaean, 

 157. 



in Canadian, 185. 



in Mesozoic, 417, 486. 



iu Tertiary, 524. 

 Igneous eruptions, non-vol- 

 canic, 716. See Volcanic. 



interior of the globe, evi- 

 dences of, 699, 722, 735. 



rocks, e3,§ 76,§ 736. 

 Iguana, 338§, 445. 

 Iguanodon, 338,§ 445,§ 450, 

 464, 474, 475, 476. 



Mantelli, 445.* 

 Ilex, 497, 498. 

 Illaenurus, 178. 



Ulaenus, 174,§ 188, 190, 228, 

 253. 



Arcturus, 191. 



Barriensis, 227,* 229, 248. 



Bayfieldi, 192. 



Bowmani, 208. 



crassicauda, 204. 



Davisii, 208.* 



range of, in time, 387.* 

 Illicium, 498. 



Illinois, Carboniferous in, 291, 

 321,358. 



Hamilton in, 267. 



lead mines of, 197. 



Lower Helderberg in, 237. 



Lower Silurian in, 210. 



Niagara in, 221. 



Oriskany in, 242. 



Quaternary in, 528, 529. 



rocks of, 378. 



Subcarboniferous in, 293, 

 294. 



Tertiary in, 491. 



Trenton in. 196. 



uplifts in, 290,* 308. 



Upper Helderberg in, 256. 

 Uyanassa obsoleta, 561. 

 Independent regions of progress, 



145. 

 India, Quaternary in, 533. 



Tertiary Mammals of, 520. 

 Indian Ocean, 25. 



currents of, 40, 658, 756. 



in the Triassic, 430. 



volcanoes in, 704. 

 Indiana, Carboniferous in, 291, 

 321, 345, 358. 



Clinton in, 220. 



Lower Helderberg in, 237- 



Oriskany in , 242. 



oil wells in, 257- 



Quaternary in, 528, 529. 



Subcarboniferous in, 293, 303, 

 304. 



Upper Helderberg in, 256. 

 Individualities in nature, 1. 

 Infusoria. See Protozoans, 



Rhizopods, Protophytes. 

 Infusorial beds, Tertiary, 493, 

 495, 514. 



dust-showers, 632 * 

 Ink-bag of Calamary, 440* 



441. 

 Inoeerainus, 433, 457, 458, 460, 

 475, 508. 



first of, 433. 



aviculoides, 468. 



