11 



NDEX. 



Final causes, consideration of, admis- 

 sible in philosophical investigations, 

 i. 547. 

 Fire.itsiank in geological dynamics,i. 36. 

 Fisher, Mr., figures prepared by, ii. 2. 

 Fishes, fossil, causes of sudden death 

 of, i. 122 ; sudden destruction of in 

 lias formation, i. 124 ; fossil intes- 

 tinal structure of, i. 198 ; croprolites 

 deiived from, i. 198 ; petrified intes- 

 tines of, or cololites,i. 200; livingspe- 

 cies observed by Cuvier,i.265; fossil 

 species, history of by Agassiz, i. 264, 

 267 ; numbers of fossil genera and spe- 

 cies, i. 267 ; classification founded on 

 scales, i. 268 ; orders of established 

 by Agassiz, i. 269 ; geological results 

 derived from fossil fishes, i. 270, 272 ; 

 changes in fossil genera and families 

 abrupt, i. 271 ; fossil, most important 

 to geology, i. 267, 273 ; sauroid, cha- 

 racter of, i. 273 ; sauroid, higher in 

 the scale of organization than ordi- 

 nary bony fishes, i. 294 ; number of 

 genera in sauroid family, 274 ; sau- 

 roid , character of living species, i,274; 

 sauroid geological extent of, i. 275 

 — 277 ; instiataof the carboniferous 

 order, i. 278 ; peculiar form of tail 

 in early strata, i. 279 ; in magnesian 

 limestone, i. 280 ; in muschel kalk, 

 lias and oolite, i. 281 ; in the chalk 

 formation, i. 283 ; in the tertiary for- 

 mations, i. 284 ; family of sharks, i. 

 286 ; results from observations on, i. 

 292 ; functions of, in the economy of 

 nature, i. 293 ; form of their crys- 

 talline lens, i. 398. 

 Fissures, site of mineral veins in, i. 548. 

 Fitton, Dr., on alterations in level of 

 sea and land, i. 43 ; his observations 

 on Cypris Faba, in Wealden forma- 

 tion, i. 118 ; his description of fossil 

 cones, i. 485 ; trunks of cycadites 

 discovered by, i. 614. 

 Fitzwilliam, Earl, cycas revoluta in 

 conservatory of, i. 500 ; trunks of 

 sigillaria in his coal mines of at Else- 

 car, i. 470. 

 Fleming, Dr., on structure of internal 

 shell of sepia, ii. 68 ; his observa- 

 tions on fishes in old red sandstone, 

 i. 277. 

 Flints, origin of, i. 90. 

 Flucan, beneficial eflfects of in mining, 



i. 546. 

 Fluidity, original, theory of, i. 40. 

 Footsteps, fossil, near Dumfries, i. 259 ; 

 preservation of explained, i. 260 ; on 



red sandstone at Ilessberg, i. 263 » 

 value of their evidence, i. 262 ; re- 

 flections on, i. 263 ; on oolite, near 

 Bath, probably of crustaceans, i. 260 ; 

 recent, of testudo grseca, i. 261. 



Foraminifers, species of found by Count 

 Munster, and Mr. Lonsdale, ii. 64 ; 

 found in crag by Mr. Wood, i. 613. 



Forest, subterranean, remains of in 

 Portland, i. 495, 496, 



Formations, geological number and 

 thickness of, i. 37. 



Forster, Mr., his section from New- 

 castle to Cross Fell, i. 64 ; on quan- 

 tity of iron annually made in Eng- 

 land and Wales, i. 530. 



Fox, Mr. R. W., on the utility of faults 

 that intersect metallic veins, i. 546 ; 

 on electro-magnetic properties of mi- 

 neral veins, i. 552, and vol. ii. p. 

 108 ; on electro-magnetic action in 

 mineral veins, ii. 107 — 109 ; his 

 electro-chemical experiments on cop- 

 per ores, i. 615 ; his electro-magne- 

 tic experiments in mines, i. 616. 



Freshwater, deposits from, in tertiary 

 strata, i. 79. 



Fries, on propagation of fungi, i. 447. 



Frogs, fossil, in Papier kohle, i. 618. 



Fruits, number and kinds of, found 

 fossil in London clay, i. 614. 



Fucoids, remains of in transition strata, 

 i. 63, 452. 



Fulham, Artesian wells at, i, 564. 



Fusion, earliest state of the materials 

 of the globe, i. 55. 



Gaillonella, size of siliceous shields 

 of, i. 611. 



Gallibis, skeletons of, at Guadaloupe, 

 i. 104. 



Ganoidian, order of fishes, i. 269. 



Gardner, Mr., his power of drawing 

 curves and parallels at minute dis- 

 tances, i. 604. 



Genesis, ungrounded fear of inconsist- 

 ence with, i. 11 ; interpretation of 

 Chap. I. consistent with geological 

 discoveries, i. 21 ; text of, reconcila- 

 ble with geology, i. 33. 



Geology, extent of province of, i. 5 ; 

 why but lately established on induc- 

 tion, i. 6 ; sciences auxiliary to it,i. 7 ; 

 its discoveries consistent with revela- 

 tion, i, 8 ; religious application of, i. 

 592 ; subserviency of to natural theo- 

 logy, 593 ; proofs from , of the existence 

 and attributes of a Deity, i. 594. 



Georgensgemiind, fossil mammalia dis- 

 covered at, i. 91. 



