116 



INDEX. 



Cotta on fossil arborescent ferns, i. 

 350. 



Crag, in Norfolk, geologicacal place 

 of, i. 140. 



Craters, various phenomena of, ii. 8. 



Creation, Mosaic account of, ac- 

 cords with natural phenomena, i. 

 21 ; origin of material elements 

 by, i. 8i. 



Creator, necessity of, shown by 

 geology, i 54. 



Crinoideans, geological importance 

 of, i. 314, 324 ; nature and cha- 

 racter of, i. 314 ; most remark- 

 able genera of, i. 315 ; living 

 species rare, i. 315 ; abundance 

 and importance of fossil species, 

 i. 315, 324; anatomical structure 

 of, i. 316; reproductive powers 

 of, i. 317 ; early extinction of 

 many species and genera, i. 324. 



Crocodileans, fossil forms of, i. 191 ; 

 slender character of snout, i. 192 ; 

 habit probably piscivorous, i. 192. 



Crocodiles, modern, habits of, i. 

 192 ; gavial, gangetic, piscivo- 

 rous, i. 192 ; functions of fossil 

 species, i. 192 ; Cuvier's obser- 

 vations on, i. 193 ; number of 

 living and fossil species of, i. 193 ; 

 dentition, provisions in mode of, 

 i. 194 ; fossil forms of, at vari- 

 ance with all theories of gradual 

 transmutation or developement, 

 i. 195. 



Crustaceans, extent of fossil re- 

 mains of, i. 292. 



Crystalline rocks, influenced by 

 chemical and electro-magnetic 

 forces, i. 38 ; eight distinct vari- 

 eties of, i 39 ; their position be- 

 neath stratified rocks, i. 42 ; pro- 

 bable igneous origin of, i. 40 ; 

 gradations in character of, i. 41 ; 

 proofs of intention in phenomena 

 of, i. 44 ; proofs of design afford- 

 ed by, i. 428. 



Crystals, definite forms and compo- 

 sition of, i. 428, 430 ; component 

 molecules of, i. 428, 430. 



Ctenoidean order of fishes, i. 206. 



Curculionidx in iron stone of Coal- 

 brook Dale, i. 309. 



Cuttle fish, structure and habits of, 

 i. 230 ; internal ink bag of, i. 231. 



Cttvier, Ids conclusion that organic 

 life has not existed from eternity, 

 i. 54 ; his account of the basin of 

 Paris, i. 67 ; his account of dis- 

 coveries at Mont Martre, i. 72 ; 

 consigns his materials for a work 

 on fossil fishes to M. Agassiz, i. 

 156, 204; his conjecture con- 

 cerning plesiosaurus, i. 162; had 

 observed nearly 8,000 species of 

 living fishes, i. 263 ; perfection 

 of his reasoning on contrivances 

 and compensations in the struc- 

 ture of animals, i. 113. 



Cycadeas, abundant in strata of the 

 secondary series, i. 368, 369 ; 

 number and extent of recent and 

 fossil species, i. 369 ; leaves fos- 

 sil in oolite of Yorkshire and at 

 Stones-field, i. 370 ; in coal for- 

 mation of Bohemia, i. 369; habit 

 and structure of, i. 370 ; interme- 

 diate character of, i. 370 ; fossil 

 on the coast of Dorset, i. 371 ; 

 peculiarities in structure of trunk 

 of, i. 371, 372 ; mode of increase 

 by buds, i. 375 ; link supplied by 

 the discovery of, i. 577. 



Cycadites, once natives of England, 

 i. 371 ; microphyllus, microscopic 

 structure of, 373, 376 ; megalo- 

 phyllus, buds in axillae of scales, 

 i. 375 ; resemblance of fossil and 

 living species, i. 376. 



Cycas revoluta, buds on trunk of, i. 

 375 ; circinalis, height of, i. 371. 



Cycloidean order of fishes, i. 206. 



Cypris, microscopic shells of, in 

 Wealden formation, i. 97; in coal 

 formation near Edinburgh, i. 209. 



Dapedium, scales of, i. 215. 



D' Alton, his figures of megatherium, 

 i. 114. 



Darmstadt, remains of mammalia in 

 museum at, i. 79. 



Darwin, Mr. C, megatherium found 

 by, ii. 20 ; his observations on the 

 Cordilleras of Chili, i. 410, 411. 



Daubeny, Dr., on cause of thermal 

 springs, i. 425 ; on indivisibility 

 of ultimate particles of matter, i. 

 429. 



Days, supposed to imply long pe- 

 riods, i. 24. 



