422 



INDEX, 



Iron accumulations, mode of 



formation of, 89. 

 bog-ore, 89. 

 oxide, deposits of, 75. 

 Islands : coastislands, how formed, 

 51. 



Joints, 228. 

 Jurassic period, 329. 



period, animals of, 329. 



period, coal of, 329. 



period, plants of, 329. 

 Jura-Trias, disturbances which 

 closed, 347. 



in America, 341. 



life-system of, 341. 



Kitchen-middens, 412. 



Labyrinthodont (labyrinthine 

 tooth : a family of extinct 

 amphibians), 3.19. 

 Lake Agassiz, 391. 



Bonneville, 394. 



dwellers, 413. 



Lahontan, 395. 



margins, 391. 

 Lakes, alkaline, 77. 



borax, 77. 



chemical deposits in, 80. 



crater, 142. 



glacial origin of, 396. 



salt, 76. 



Lamellibranch (plate-gill), 279. 

 Lamination, cross or oblique, 184. 

 Land, mean height of, 176. 

 Laosaurus, 346. 

 Laramie epoch, 360. 



epoch, coal of, 361. 

 Lava, classification of, 139. 



kinds of, 137. 



sheets, extent of, 217. 

 Lepidodendrid, 287, 307. 

 Lepidodendron (scale-tree), 307. 

 Lepidoganoid (scale-ganoid), 293. 

 Lepidosiren (scaly siren : an am- 

 phibious fish), 295. 

 Levees, artificial, 32. 



natural, 31. 

 Lime accumulations, 91. 



carbonate, deposits of, 73. 



sinks, 72. 

 Limestone caves, how formed, 71. 



Limestone shell, 114. 



Limuloids : Limulus family, 316. 



Limulus ; horseshoe-crab, or king- 

 crab, 284, 316. 



Lithodomi (lithos, stone, domus, 

 house : a species of shell-fit!! 

 which burrow in rocks), 167. 



Lost intervals explained, 267. 



Lycopod (wolfs foot : an order of 

 club-mosses), 307. 



Machairodus (saber-toothed), 381, 



402. 

 Mammals, age of, 363. 



genesis of orders, 382. 



of the Tertiary period, 374. 

 Mammoth, 898. 

 Man, antiquity of, 409. 



Neolithic, 412. 



of the caves, 410. 



of the river-drift, 410. 



primeval, in America, 414. 



primeval, in Europe, 410. 

 Marmites des geants, 63. 

 Mastodon (nipple-toothed), 399. 

 Mastodonsaur (teat-toothed liz- 

 ard), 327. 



Mauvaises Terres, 248, 366. 

 Megalosaur (great lizard), 336. 

 Megatherium (great beast), 401. 

 Mentone man, 410. 

 Mesohippus (mid-horse), 379. 

 Mesozoic (pertaining to middle 

 animal life) era, 324. 



era, characteristics of, 324. 



era, disturbance which closed, 

 360. 



era, general observations on, 

 359. 



era, subdivisions of, 324. 

 Metamorphic rocks, 224. 

 Metamorphism, cause of, 226. 



agents of, 226. 

 Migrations during Glacial epoch, 



403. 

 Mineral springs, 71. 



veins, 233. 



Miocene (less recent), 364. 

 Miohippus (less horse-like), 378. 

 Mississippi delta, 34. 

 Mode of accumulation of coal, 



310. 

 Mollusks, 279. 



