498 



INDEX, 



419 ; of the trias, 429 ; of the coal, 



196; Devonian, 452; Silurian, 458. 

 Fossiliferous deposits, 114. 



rocks, 117,119. 

 Fox, fossil, 371. 

 Fracastoro, his correct geological 



views, 28. 

 France, the oolitic group in, 409, 



412. 

 central, dormant volcanoes 



of, 372. 

 Freshwater deposit, the wealden, 



392 ; alternation of, with marine, 



on the south-east coast of England, 



400. 



Fringilla, 309. 

 Frogs, fossil, 304. 

 Fucoides targionii (figure), 179. 

 Fulua, 312. 

 Fusus, 368. 



G. 



GALLUS, 310. 



Ganoid fishes, 275, 278. 



Gases, the, proportion of, 131. 



Gasteropoda, 230, 237; detailed 

 description of, with illustrations, 

 238 ; divisions, 245 ; proportions 

 in different formations, 247. 



Gault, 379. 



Genera, extinct. See PALEONTOLOGY. 



General composition of the mass of 

 rocks, 131. 



Geodes, 158. 



Geographical distribution of the ter- 

 tiary series, 355 ; the wealden 

 group, 395 ; the oolitic group, 

 410 ; the lias, 418 ; the trias, 

 427 j the mountain limestone, 

 447. _ 



Geological formation, idea of a (illus- 

 trations), 137 et seq. 



Maps, Smith's and other, 

 40, 70. 



sections, 348, 367, 381, 

 395398, 401. 



Society, foundation of the, 

 40. 



time, attempt to estimate 



from the retreat of the falls of 

 Niagara, 51. 



Geologist, qualifications of the, 66 ; 

 advantages afforded to, by the 

 scientific societies of the metro- 

 polis, 68. 



Geology, definition of, 2 ; dependence 

 of national prosperity on geological 

 position, 3 ; in relation to mining, 

 5; agriculture, 10; the fine arts, 

 12 ; health, 13 ; mental discipline, 

 15 ; history of, as a science, 18 ; 

 views of the Greeks and Romans, 

 19, 23; lost sight of, in the middle 

 ages, 23; legends and superstitions, 

 23, 25 ; pretended remains of 

 Teutobochus, 26 ; Homo Diluvii 

 Testis, 26 ; revival of geology, 26 ; 

 controversies of the sixteenth and 

 seventeenth centuries, 34 ; Wer- 

 ner's system, 36 ; progress of 

 opinion, 37 ; Dr. Hutton and the 

 Plutonian theory, 38 ; labours of 

 William Smith, 39 ; the Geological 

 Society, 40 ; the British Associa- 

 tion, 41 ; the Museum of Economic 

 Geology, 68 ; in harmony with 

 Revelation, 48, 342 ; antiquity of 

 the earth, 49 ; the earth little 

 changed during the historic period, 

 52; recent creation of man, 53 ; 

 various opinions on the origin of 

 the earth, 55 ; changes at present 

 in operation, 62 ; writers on, 69. 



physical, 112; classification 

 and arrangement of deposits and 

 strata, 113 ; fossiliferous rocks, 

 129 ; stratification, 138 ; order 

 and succession of rocks, 1 50 ; 

 writers on, 159. 



special, 344 ; modern geo- 

 logical changes, 344 ; encroach- 

 ments of the sea, 344 ; landslips, 

 348; fluviatile action, 349; atmos- 

 pheric agency, 349 ; conservative 

 principles, 350. 



Geosaurus, 297. 



Gessner, Conrad, biography of, 28 j 



publishes representations of fossils, 



28. 



