INDEX. 



117 



Dax, shells found at, i. 270. 

 Death, sudden, desirable for irra- 

 tional animals, i. 106. 

 Dekay, Dr., discovered coprolites 



in New Jersey, i. 149. 

 De la Beche, his belief in succes- 

 sive creations of new species, i. 

 51 ; his figures of ichthyosauri, i. 

 138, 139 ; on different specific 

 gravity of shells, i. 229 ; observa- 

 tions on living polypes of caryo- 

 phyllia, 334, 335 ; observations on 

 genera of corals in transition 

 rocks, i. 335. 

 Deluge, mosaic stratified rocks not 



produced by, i. 23. 

 Depression, proofs of in 1. Portland, 



i. 372. 

 Deshayes, his division of tertiary 



strata, i. 68. 

 Desnoyers, M., on Faluns of Tour- 



raine, i. 78. 

 Desmarets, memoir on fossil crusta- 

 ceans, i. 393. 

 Detritus, origin of strata from, i. 42. 

 Developement, theory of disproved 

 by geological phenomena, i. 51 ; 

 theory of opposed by Cuvier, i. 

 75 ; definition of, i. 435, 436. 

 Dikes, intersect strata of every age, 

 i. 46 ; gradations of from lava to 

 granite, i. 47 ; various crystalline 

 rocks composing, ii. 5 ; changes 

 produced by, on adjacent rocks, 

 ii. 9. 

 Dillwyn, Mr., his paper on tracheli- 



pods, 226, 228. 

 Diluvium, animals immediately pre- 



ceding the farmation of, i. 81. 

 Dinotherium, largest of terrestrial 

 mammalia, i. .79, 109 ; found at 

 Epplesheim, in miocene strata, i. 

 110; description of by Kaup, i. 



110 ; occurs in France, Bavaria 

 and Austria, i. 110 ; molar teeth 

 of like tapirs, i. 110 ; giganteum, 

 eighteen feet long, i. 110 ; shoul- 

 der blade of, like that of a mole, 

 i. 110; uses of tusks in the lower 

 jaw of, i. Ill, 112 ; molar teeth 

 of resemble those of tapirs, i. 



111 ; an aquatic herbivorous ani- 

 mal, i. Ill, 112; adapted to a 

 lacustrine condition of the earth, 

 i. 112; localities and description 



of, ii. 18 ; proboscis and claws of, 

 ii. 19. 



Dirt bed, soil of subterraneous fo- 

 rest in Portland, i. 372. 



Disturbing forces, beneficial results 

 of, i. 403, 404, 409. 



D'Orbigny, M. his classification of 

 cephalopodous mollusks, i. 288 ; 

 trilobites and shells found in the 

 Ancles by, i. 294. 



Draco volans, has no true wings, i. 

 174, 175. 



Dufrenoy, on iron mines in the Pyre- 

 nees, i. 410. 



Dujardin, new class of rhizopodes 

 discovered by, ii. 64. 



Dumfries, fossil footsteps near, i. 

 259. 



Duncan, Dr., his discovery of fossil 

 footsteps near Dumfries, i. 198. 



Durdham Down, remains of reptiles 

 at, i. 95. 



Durham, salt springs in coal forma- 

 tion near, i. 63. 



Dynamics, geological, extent of, i. 



Earth, distribution of the materials 

 of, i. 16; theory of, much ad- 

 vanced, but not yet perfect, i. 20 ; 

 two distinct branches of its his- 

 tory, i. 36; originally fluid from 

 heat, i. 40 ; advantageous dispo- 

 sitions of its materials, i. 83. 



Earthquakes, beneficial agency of 

 in the economy of the globe, i. 

 404. 



Echidna, has furcula and clavicles 

 like ornithorhynchus, i. 143. 



Echinidans, geological extent of, i. 

 312, 313. 



Egerton, Sir Philip, his discoveries 

 near Newcastle-under-Line, i. 

 210 ; on mechanism of atlas and 

 cervical vertebrx of ichthyosau- 

 rus, ii. 24—26. 



Eggs, fossil, of aquatic birds, i. 74. 



Elements, identity and functions of, 

 i. 38 ; proofs of design in, i. 426 ; 

 ever regulated by same laws, i. 

 430; primordial adaptations of, i. 

 430 ; adaptation of to vegetables 

 and animals, i. 431. 

 Elevation, general history of, ii. 4 j 



