454 



INDEX. 



Manitoulin Islands, 124 



" " petroleum at, 276, 2S9. 



Mantell, Dr., 182, 189. 



Marcellus shale, 127. 



" " as a source of oil, 289. 



Marcou on Niagara Falls, 245. 



Mariacrinus, 125. 



Maritime plants suddenly appearing, 257. 



Marl, origin of, 23S. 



Marquette, glacier action at, 215. 



Marsh, G. P., quoted, 252, 253. 



Marsh, O. C, on reptiles, 170, 1S6. 



Marshall Group, 129, 131, 165, 439. 



" sandstone as a reservoir of 

 brine, 297. 



Martins, Charles, on deep sea tempera- 

 tures, 444. 



Mastodon and mammoth, 239. 



Matter, forms of, 37. 



Mauvaises terres, 205, 206. 



Mayer on variability of the day, 406. 

 " " solar heat, 422. 



Mediterranean Sea in America, 196, 199. 



Meek, F. B., on Permian rocks, 172. 

 " " " Mesozoic and Cenozoic 

 fossils, 210. 



Megalonyx Jeffersoni, 255. 



Megalosaunis, 188. 



Melleville on primeval man, 356. 



Menander on secular catastrophes, 384. 



Menu, Institutes of, on cosmogony, 383. 



Metamorphism of rocks, 33. 



Metamorphoses of Ovid, quoted, 39. 



Meteorites, 410. 



Method in continental growth. 94, 307. 

 " history of life, 98, 102, 314. 

 " " coal-making, 160. 



Michigan as an oil region, 290, 291. 

 salt wells of, 304. 



Michigan, Lake, geology of, 225. 



" " a modifier of climate,226. 



" " former outlet of, 269. 



Miller, Hugh, 129. 



" " portrait of, 137. 



Millstone grit, how formed, 153. 



Millstones in primeval times, 365. 



Milwaukee, geology of, 125. 



Mind in Nature, 16, 98, 104. 



Mine, descent to, 139. 



Mines, ancient, in Spain, 257. 

 " depth of, 439. 



Miners' Castle, Pictured Rocks, 86. 



Mining and miners, 143, 146. 



Mining implements, ancient, of Lake Su- 

 perior, 257. 



Mining implements in Spain, 257. 



Mining of timber in New Jersey, 257, 2 



Minnesota Mine, Michigan, 440. 



Missionary Ridge, 342. 



Mississippi River, geological relations 

 of, 96, 235. 



Mississippi River, sediments of, 398. 

 " Group, 136. 



" Valley, effect of depression 

 in, 25. 



Missouri River, origin of, 201. 



Moa, 368. 



Moisture as a cause of prairies, 266. 



Molluscous animals, 102. 



" " order of, 316. 



Molten period of the earth, 36. 

 Monadnock, marks of submergence on, 



229. 

 Montreal, terraces at, 230. 

 Moral nature of primeval man, 363. 

 " " " man differentiates him, 



376. 

 Morlot cwi antiquity of man, 36S. 

 Mornings of eternity, 431. 

 Mosasaurus, 190. 

 Motion characterizes Nature, 392. 



" is mechanical, 394. 

 Mounds, burial, 260, 350. 

 Mountains to be leveled, 397. 

 Multiplication of similar parts, 323. 

 Murchison on gneiss, 58. 



" " gold regions, 335. 



Museum of University of Michigan, 176. 

 " " Yale College, 186. 

 " British, 186. 

 " Amherst, 186. 

 " Wood's, 203. 



Naked reptiles, 167. 



Nantucket, change of level at, 22. 



Nashville, Tennessee, situation of, 341. 



" " geology of, 341. 



Nature, interpretation of, 15. 



" mind in, 16. 

 Nautilus, the Paper, 110. 



" Pearly, 114. 

 Nautilus pompilius, 114. 

 Nebulae, 425. 



Nebular hypothesis, 41, 42. 

 Neptune and world-harmonies, 329. 

 Nescience in geologic theory, 434. 

 Nevada, salt-beds of, 295. 

 Newberry, J. S., on fishes, 127. 

 " " " reptiles 170. 



" " " fossil vegetation, 254 



" " " petroleum, 28S, 291. 



" " Colorado River, 345. 

 New Brunswick, change of level in, 22. 

 " Jersey, change of level in, 22. 

 " " cretaceous reptiles in, 190. 

 New Red Sandstone, 16S. 

 Newton on comets, 409. 



" " resisting medium, 418. 

 Niagara limestone, 123. 



" " mass, 134 



" " as an oil rock, 280. 



" River, 124. 



" " of Mesozoic Time, 201. 



" " ancient gorge of, 220, 235. 



" " a key to ancient geogra- 



phy, 224. 

 Niagara Gorge, 243. 



,r " age of, 245. 



Nilsson on primeval man, 363. 

 Noble Oil Well, 274. 

 Noquet, Bay de, 124. 

 North Carolina, change of level in, 22. 

 Nova Scotia, coal-measures of, 155. 

 Nucleus of the earth, shrinkage of, 199. 



Occupations of primeval man. 363. 



