INDEX. 



483 



lower palaeozoic rocks, 262 ; on the 

 geology of Quebec, 256-258, 397- 

 399 ; on the Quebec group, 259, 263, 

 264, 401, 403 ; on the geology of Ver- 

 mont, 260, 394; on geological nomen- 

 clature in Canada, 420. 



Loire, waters of, 84. 



Longmynd rocks, 266, 380, 382. 



Loraine shales. See Hudson Eiver 

 group. 



Lory on the geology of the Alps, 334, 

 336. 



Lower Helderberg rocks, 415, 418. 



Lower paleeozoic formations, classifica- 

 tion of, 267 ; tabular view of, 386. 



Ludlow rocks, 353, 361, 362, 418. 



Luxeuil, water of, 205. 



Lycopodium, spores of, 181. 



Lyell, C., on the cause of plications in Metamorphic 

 strata, 55 ; on Mont Blanc, 338. 



MAcCuLLOCH on hypers thene rocks, 

 279. 



Macfarlane, T., on Huronian rocks, 

 18, 269, 274; on the plutonic origin 

 of crystalline schists, 294. 



Macvicar on the constitution of min- 

 eral species, 457. 



Madoc, gold and carbon of, 217. 



Magnesian marls, see Sepiolite ; mi- 

 ca, 207; silicates, formation of, 21, 

 122, 151, 296, 297, 300. 



Mngnesite, 33, 90, 243. 



Magnesium salts in mirTeral waters, 

 137, 138; chloride of, 117, 118; 

 phate of, 106, 108, 11 9^ 134. See 

 Carbonate of magnesia. 



Magnetic iron ore, in vein-stones, 214; 

 veins in, 215. See Iron ores. 



Magnetism, its relation to th'e 

 interior, 60, 61. 



Mallet, R., on internal heat, 78; on vol- 

 canic rocks, 79. 



Malvern, geology of, 360, 373, 383. 



Manganese, relations of, to vegetation, 

 98 ; in waters, 142. 



Manitoulin Island, water of, 158. 



Marbles of Vermont, 311. 



Marcou, J., on Taconic rocks, 251. 



Marignac on dolomites, 309. 



Marine salts in rocks, 103. 



Marls, m.-.^nesian. See Sepiolite. 



Marsh gas, origin of, 177, 182 ; relation 

 of, to radiant heat, 46. 



Mather on limestones, 218; on Taconic 

 rocks, 254. 



Matinal rocks, 421. 



Matter, its chemical history, 426, 465. 



Matthews, G. F., geology of New Bruns- 

 wick, 407. 



Meionite, 445, 446. 



Melting-point, relation of, to pressure, 

 7, 39, 60, 65. 



Menevian rocks, 266, 371 - 373 ; in 

 North America, 385, 407. 



Metagenesis in chemistry, 427, 465. 



Metalliferous deposits, origin of, 23, 

 220. 



Metals in sea-water, 231. 



rocks, objections to the 

 tei-m, 18 ; chemistry of, 19. 



Metamorphism of rocks, 9, 18, 19, 24- 

 28, 286, 287, 291, 298-300, 305-307, 

 317, 320 ; not to be confounded with 

 pseudomorphism, 24, 291 ; Hutton 

 and Boue on, 24, 321 ; Dana on, 291, 

 320; Credner and Giimbel on, 305; 

 Favre on, 342, 347 ; Naumann on, 25, 

 293, 295, 322, 323; local, 18, 24-26, 

 295, 298, 299, 307. 



Metamorphosis of rocks, supposed, il- 

 lustrations of the doctrine, 287, 

 324 - 326. 



Metamorphosis in chemistry, 427, 465. 



Meteoric stones, constitution of, 302. 



, conditions of their formation, 28; 

 magnesian, of Laurentian series, 207. 



Mica-schists, 28, 32, 207, 244-247, 

 272, 282, 326, 331, 353, 408; sup- 

 posed pseudomorphic origin of, 326. 

 , crystalline rocks of, 274. 



Mineralogy, its province, 453; classifi- 

 cation in, 454. 



Mississippi, mud of, 10 ; valley, geology 

 of, 50, 75. 



Mixtures in mineral species, 444. 



Molasse of the Alps, 345. 



Montalban rocks, 194, 282. See White 

 Mountain series. 



Montarville, dolerite of, 186. 



Mont Blanc, geology of, 329 ; trias of, 

 331; crystalline rocks of, 330. 



sul- Micas 



earth's Michigan 



