4n 



4 



INDEX. 



of, 67, 151; elevation of, 67, 152; sup- 

 posed protrusion of among secondary- 

 rocks, 69. 



Granitic w^ountains, aspect of, 59. 



veins shoot up into superin- 

 cumbent rocks, 63 ; instance of at 

 Mousehole in Cornwall, ib. ; also at 

 Glentilt, 64. 



Granular, composed of grains, 38. 



Gravel, beds of on the summits of de- 

 tached hills, 354. 



Green marl of the Paris basin, 229. 



sa7id, the arenaceous beds below 



chalk, so called, position of, 197; de- 

 scription of, 200; upper and lower 

 green sand separated by a bed of stiff 

 clay called gait, 201 ; the lower green 

 sand generally ferruginous, ib. 



Greenstone, the diabase of the French, 

 sometimes called trap, 99, 129. 



Gr^s rouge, gres des Vosges, gres bi- 

 garri, 163. 



Greijioacke, or greywacke slate, German 

 grauwacki, French traumate, 86; a 

 coarse slate containing particles of 

 other rocks and minerals, ib.; when 

 the particles are very minute, passes 

 into common state, ib. ; when the frag- 

 ments are numerous, and the slate 

 scarcely perceived, resembles coarse 

 sandstone or gritstone, ib. ; described 

 by the French as a transition sand- 

 stone, ib.; formation of, 86; conglom- 

 erate associated with, ib. 



Guadaloupe, skeleton of a woman found 

 in the calcareous sandstone, 14. 



GypseoiLS marl and gypsum, detached 

 hills on the banks of the Marne and 

 Seine, 227; gypsum formation, ib. ; 

 organic remains in, ib. ; bones of large 

 quadrupeds found in, 228; bones of 

 birds found in, ih. ; freshwater shells 

 in, separated from the marine shells 

 by a bed of green marl, ib. 



Gypsum, or sulphate of lime, called also 

 plaster stone and plaster of Paris, less 

 abundant than carbonate of lime, 37; 

 constituent parts of, ib. ; accompany- 

 ing rock salt in the Alps, anhydrous, 

 175, 176. 



H. 



Hading, or dipping of a metallic vein, 

 286. 



Hall, Sir James, his experiments to ex- 

 plain the formation of basalt, 146; on 

 limestone and chalk, ib. ; on sand- 

 stone, 210; his theory on the forma- 

 tion of valleys and on diluvian agen- 

 cy, 354. 



Halley, Dr., hypothesis, 3. 



Hastings sand, or iron sand, 192. 



Heber, Bishop, his account of the ele- 



phants of the Himmalaya Mountains, 

 25. 



Height of mountains, table of. See Ap- 

 pendix, 376. ' 



Herbivorous quadrupeds, remains of in 

 tertiary strata, 25, 



High Stile Mountain, 132 : crater of, 

 133. 



Himmalaya or Himmaleh Mountains, 

 ten thousand feet higher than Mont 

 Blanc, 61 ; believed to be composed of 

 secondary strata, 62; elephants of, 

 with shaggy hair, 25. 



Hippopotamus, fossil remains of, com- 

 mon in England, France, &c., 331; 

 tooth, cut of, 330. 



Ho7ie, or Whetstone slate, 85. 



Hornblende rock, called by the French 

 amphibole, 36; melts easily into black 

 glass, ib. ; forms trap rocks, ib. ; anal- 

 yses of, ib. ; granular and lamellar, 98. 



slate fibrous, and has a vel- 

 vet lustre, 79 ; passes by gradation 

 into serpentine, ib.; rare in England, 

 but abundant in Scotland, 80; forms 

 part of the principal mountain ranges 

 in Europe, ib. 



Hornstone, or petrosilex, infusible with- 

 out the addition of alkalies, 50. 



Hot springs. See Thermal waters. 



Human bones not discovered in a fossil 

 state, 13, 25, 333; not more perishable 

 than those of quadrupeds, note, 25. 



skeletons in caverns, intermixed 



with bones of extinct species of quad- 

 rupeds, 305, 307. 



Humboldt's account of the formation of 

 new islands, 49 ; on volcanoes and the 

 extent of volcanic fire, 252, 258, 260, 

 268. 



Hushing, used in Westmoreland for dis- 

 covering beds of slate, 346. 



Huttonian theory respecting granite, 

 66; of metallic veins, 292; on the 

 formation of valleys, 349. 



Hyena, bones of in Kirkdale cavern, 

 308. 



Hylaosaurus, or forest lizard, bones of 

 discovered by Mr. Mantell, 197; un- 

 like any known species, ib. 



I. and J. 



Jasper, 34, 79 ; beds of in the Apen- 

 nines, 98. 



Java, volcanic eruptions in, 265. 



Icthyosaurus,'^^', skeleton, cut.of, 181; 

 conjectures respecting its being an in- 

 habitant of the present ocean, 213. 



Jet,m. 



Iguanodon, an enormous fossil herbiver- 

 ous reptile, discovered by Mr. Man- 

 tell ; teeth, cut, of, 195. 



Imbedded rocks, 48. 



Inclination of strata, 43. 



