REPORT ON THE DEEP-SEA DEPOSITS. 
505 
Coscinodiscus griseus, var. gallopagensis, 210. 
„ imperator, 282. 
„ lentiginosus, 210, 282. 
„ . „ var. maculata, 210. 
,, UneatiLs, 210. 
„ lunsR, 210. 
„ margaritaeeus, 210. 
„ marginatus, 210. 
„ nobilis, 282. 
,, prsetor, 282. 
„ radiatun, 210. 
„ robustus, 210. 
„ „ var. minor, 210. 
sol, 282. 
subtilis, 210, 282. 
„ var. glacialis, 210. 
tubereidatus, var. antarctica, 210. 
,, „ excentrica, 210. 
„ tumidus, 210. 
Cosmic dust, 217, 327. 
„ dusts in general, 333-336. 
„ spherules, 22, 32, 194, 203, 204, 327-336, 
353, 356, 358, 365, 378, 403, 412. 
Cosmopolitan species of Foraminifera, 263. 
Counter Equatorial Current, 176, 178. 
CourteiUe, M., xviii. 
Credner, H., 186. 
Cretaceous Chalk, 267. 
„ formations, 334, 397. 
„ „ glauconite in, 384. 
„ period, xxvii. 
„ sea, xxviii. 
Crete, xxiii. 
Crinoidea, 194, 265. 
Cristellaria, 50, 165. 
„ rotulata, 263. 
Crossed tudns of philhpsite, 402, 404. 
Crozet Islands, 382. 
„ deposits between Marion Island and, 
76-79, 161. 
„ deposits off, 78-79, 161. 
Cruciform twins of philhpsite, 402, 404. 
Crustaceans, xv, xviii, xx, 35, 38, 58, 88, 96, 181, 
251, 264-265, 285, 289, 399. 
Crystalline rocks, 292, 318, 325, 380, 400,406,407,409. 
„ schist, 325, 326, 400. 
„ spherules, 330-332. 
CrystaUites, 301, 303, 304, 332. 
Crystals of philhpsite in marine deposits, 400-411. 
Cup lead, 1, 2. 
Cupule in magnetic spherules, 328, 330, 331. 
(deep-sea deposits chall. exp. — 1891.) 
Currents, 292, 321, 409. 
Curves, isobathic, xv, 
Cusanus, Nicolaus, xiv, xv. 
Cuttle-fish bones, 267. 
Cuvierina columnella, 224. 
Cuxhaven, xxi. 
Cyatholiths, 258. 
Cydammina, 41. 
“ Cyclops,” the, xxv. 
Cymbcdopora, 48, 50, 216. 
„ (Tretomplialus) bvlloides, 214. 
Cyrtoidea, 205, 284. 
Oysteddnus myvilUi, 181. 
Cythere, 265. 
„ didyon, 265. 
“Dacia,” the, 8, 30. 
Dana, J. D., 287. 
“ Dart,” the, 30. 
Darwin, C., 290. 
Daubrde, A., 334, 401, 407. 
Davidson, T., 266. 
Dayman, Commander, xv, xxv. 
Debris, volcanic, 372, 375, 376, 401, 410. 
Deccan, 406. 
Decomposition of organic matter, 253, 254, 255, 256. 
„ pumice, 295. 
Deepest Challenger sounding, 108-109, 175, 
204-205. 
„ ,, in Atlantic, 46-47. 
Deep Sea, definition of, 184. 
„ animals, food of, 253, 
„ Benthos, 250. 
„ clay, 25, 338-341. 
„ Deposits, 185, 186, 188. 
„ Keratosa, 121. 
,, zone, 188. 
Delesse, M., xxvii, 186. 
Delessite, 20, 312, 316, 320. 
Delphinidse, 271, 272. 
Delplimus, 179, 271, 272. 
Deltas, xviii. 
Dendy, A., 285. 
Dentalium, 38, 40, 44, 48, 50, 58, 60, 72, 76, 84, 92, 
96, 106, 110, 111, 114, 134, 142, 216, 225, 289. 
Deposition of deposits, rate of, 411-412. 
„ minute particles in water, 196. 
Depth of types of deposits (see Average Depth). 
Descloizeaux, M., 402. 
Devonian dolomitic clay of Quistenthal, 199. 
,, rocks, 334, 
66 
