INDEX. 



421 



pper Silurian, 120, 121. 

 Oolite, 2S4, 236; Upper, 264, 266, 



Gavial, 260, 307. 



Genesee Slates, 137. 



Geological record, breaks in the, 48- 



56. 



Giraffes, 328. 

 Glacial period, 33o; deposits of, 349, 



3oO. 



Glandulina, 322. 

 Glaucouite, 3f>, 74, 271. 

 Glaucojiomr, 127, 187; piilcherrima, 187. 

 Globe Crinoids (*<'< Cystoidea). 

 Globigerina,23, 24, 272. 

 Glutton, 374. 

 Glyptaster, 122. 

 Glyptocrinus, 125. 

 Gtyptodon, 35.3G6; davipcs, 366. 

 Glyptolcemus, 156. 

 Goats, 329. 



Goniatltes, 132, 151, 191, 219; Jossx, 191. 

 Gorffonidse, 302. 

 Grallatores, ."07. 

 Graphite, 37; mode of occurrence of, 



37. 68; origin of, 37. 

 Qraptolites, 90, 101; structure of, 101 ; 



of the Lower Silurian, 101-104; of 



the U 

 Great 



268. 



Greenland, Miocene, plants of, 321. 

 Greensand, Lower, 264, 268. 

 Greensands, origin of, 265. 

 Grevillea, 270, 320. 

 GriffltMdes, 183. 

 Grizzly Bear, 373. 

 Ground Sloths, 364. 

 Gryphoen, 243; incurva, 243. 

 Guelph Limestone, 119. 

 Gulo ftttCttt, 374 ; spelivux, 373. 

 Guttenstein Beds, 210, 211. 

 Gymnospermous Exogens, 270. 

 Gypsum, 33, 197, 209. 

 Gyracanthv*. 192. 

 G'yroccras, 132. 



JIadrosaurus, 287. 



Jfdli.fhcrium, 309. 



Hallstadt Beds, 210, 211. 



Halobia, 216. 



Hatysitcx, 121; agglomerata,'122; eaten- 



Ktarid,}22. 



Hamilton formation, 137, 139. 

 Hamites, 281 ; rotundus, 282. 

 Haplophlcbium Barnesi, 186. 

 Harlech Grits, 78. 79. 

 Harpes, 110, 126 ; ungula, 126. 

 Hastings Sands, 265. 

 Headon and Osborne series, 297, 298. 

 Heart-urchins, 322. 

 Hcliolites, 106, 121, 274. 

 Heliophyttum. 144, 176; exiguum, 143. 

 Helix, 304. 



Helladotherium, 328. 

 Heloporafragilis, 128. 

 Hemicidaris crenularis, 240. 

 Hemiptera, 322. 



Hemitrochizcvs paradoxus, 202. 

 Hempstead Beds, 316. 

 Hespe,rornis,29Q, 291; regroftft, 29L 

 Heteropoda, 112; of the Lower Silu- 



rian, 112; of the Upper Silurian, 



131 ; of the Devonian, 150; of the 



Carboniferous, lcJ9. 



Hinnites, 219. 



Hipparion, 312,32^,340. 



Hippodium, 242. 



Hippopotamus, 313; amphibius, 328. 



340; major, 3 11, 349, 367; Sivalensis, 



329. 



Ifippothoa, 110. 

 Hippurite Marble, 278. 

 Hlppuritcs, 278; Toucasiana, 279. 

 Hippuritidse, 278, 294. 

 Histioderma, 83. 



Hollow-horned Ruminants, 329. 

 Holocystis elegans, 274. 

 Holopea, 131 ; subconica, 131. 

 Holopella, 131,219; obsolcta, 131. 

 Holoptychius, 156 ; nobilisstmun, 158. 

 Holostomatous Univalves, 244, 303. 

 Holothurians, 122. 

 Holtcnia, 272. 

 Homacant tuts, 192. 

 Homalonotus, 126, 146 ; armatus, 147. 

 Homo diluvii testis, 324. 

 Honeycomb Corals, 144. 

 Hoofed Quadrupeds, 310. 

 Hudson River Group, 96. 

 Human implements associated with 



bones of extinct Mammals, 377, 



378. 



Huronian Period, 75, 76; rocks of, 75. 

 Hysena crocuta, 342 ; spelsea, 374 ; Hip- 



parionum, 342. 



Hysenodon, 315. 

 Hyalea D'Orbir/nyana, 323. 

 Hybodus, 2 0, 249, 283. 

 Hydractinia, 273. 

 Hydroid Z9Ophytes, 104, 273. 

 Hymenocaris vermicauda, 84, 85. 

 Hymenophyllites, 167. 

 Hyme.noptera, 322. 

 Hyopotamus, 313. 

 Hyperodapedon, 224. 

 Hypsiprymnopsis, 230. 

 Hystrix primigenius, 333. 



Ichthyocrinus leevis, 125. 



IcMhyornis, 290, 291 ; dispar, 290, 291. 



Ichthyosaurus, 249, 250, 285; communis, 



249. 



Ictitherium, 333. 

 Iguana, 286. 



Iguanodon, 2 C 6, 287; Mantelli, 286. 

 Ilfracombe Group, 136. 

 Illsenus, 110, 126. 

 Imperfection of the palseontologi- 



cal record, 52, 53. 

 Inferior Oolite, 234, 236. 

 Infusorial Earth, 35. 

 Inocerarmis, 277 ; sitlcatus, 278. 

 Insectivora'ot the Eocene, 316; of the 



Miocene, 354. 

 Insects of the Devonian, 147; of the 



Carboniferous, 186; of the Jurassic, 



240; of the Miocene, 322, 323. 

 Irish Elk, 360. 

 Ischadites, 100, 120. 

 Isopod Crustaceans, 84. 



Jackson Beds, 299. 



Jurassic period, 232; rocks of, 333; 

 life of, 236, 263. 



