INDEX 



557 



Dacite, 200. 



Dakota stage, 475, 479/t*. 



Dalmanites, 381, 390*, 391. 



Dammarites, 485*. 



Dana, J. D., 375, 408. 



Dapedius, 468*. 



Darwin, Charles, 123. 



Davis, W. M., 324. 



Dawson, G. M., 527. 



Dead Sea, 309. 



Decapoda, 424, 464. 



Deccan, lava fields of, 58. 



Deep River substage, 496, 5i3t. 



Deep-sea deposits, 174. 



Deer, fossil, 517, 522, 524, 538. 



Degradation, 301. 



Delaware River, 324, 327. 



Delaware Water Gap, 81* 83, 308, 314. 



Deltas, 140-r, 141, 142, 143. 



Dendrerpeton, 427. 



Dendrocrinus, 383*. 



Denudation, ji\, 301, 307, 310, 339; 

 cycles of, 340. 



Denver stage, 475, 482^ 



Deposits, chemical, 127, 147, 148, 174; 

 deep-sea, 174; estuarine, 181; fiuviatile, 

 136; glacial, 153, 311; ice, 153, 159, 

 527; iceberg, 158; lake, 143; littoral, 

 162; marine, 160; mechanical, 205; 

 organic, 133, 148, 166 ; pelagic, 176 ; 

 shallow-water, 164 ; swamp, 133 ; ter- 

 restrial, 124; terrigenous, 174. 



Depression, 65 ; causes of, 68 ; evidences 

 of, 67. 



Deserts, denudation in, 84. 



Destruction of rock, 71. 



Devil's Tower, 283, 285* 



Devitrification, i2f, 197. 



Devonian period, 355, 394t. 



Diabase, 20if, 279, 297, 445. . 



Diallage, 20. 



Diastrophism, 301. 



Diatom ooze, 179, 180*. 



Diatoms, 148, 182, 214. 



Dibranchiata, 374, 442, 452, 467. 



Diceras, 466. 



Diclonius, 492*. 



Dicotyledons, 441, 485. 



Dicranograptus, 383*, 



Dicrocynodon, 493. 



Dictyopyge, 453. 



Dicynodon, 453. 

 Didelphops, 493. 

 Dikes, 50, 278*1, 279*; sandstone, 268* 



269f. 

 Dimetric system of crystals, 9. 

 Dinaric series, 443, 447. 

 Dinichthys, 405. 

 Dinosauria, 454t, 471, 491, 495. 

 Dinotherhtm, 517, 522. 

 Diorite, 2cof, 284 ; family, 200. 

 Dioritic gneiss, 296. 

 j Dip, 232; of fault, 243; initial, 231, 256, 



257*. 

 Dip faults, 246, 250, 251*. 

 Dip joints, 264. 

 Dip slope, 316. 

 Diplodocus, 491. 

 Diplograptus, 383. 

 Dipluriis, 453. 



Dipnoi, 404-r, 426, 435, 453, 467. 

 Diptera, 465. 

 Dipterus, 405*. 

 Discina, 373. 

 Displacements of coast-line, 65 ; of 



strata, 230. 

 Diversion of streams, 328, 329*. 

 Divides, 326; shifting of, 327. 

 Dodecahedron, 9*. 

 Dogs, fossil, 508, 522. 

 Dogger, 457. 

 Dolerite, 201. 

 Dolomite (mineral), 23; (rock), 213; 



crystalline, 294. 

 Dolomitization, i7cf, 214. 

 Dolphins, fossil, 517. 

 Dome, 235. 



Double Mountain Beds, 428, 430. 

 Downthrow (of faults), 243. 

 Dragon-flies, fossil, 465. 

 Drainage, consequent, 323 ; superim- 

 posed, 326 ; transferred, 329. 

 Drakenbergen, 437. 

 Drift, 527; englacial, 114; stratified, 



528. 

 Drift-sand rock, 127. 

 Driftwood theory of coal, 413. 

 Dynamic agencies, 30; metamorphism, 



291. 



Eagle Ford Shales, 475. 

 Eagles, fossil, 503, 516. 



