518 
THE VOYAGE OF H.M.S. CHALLENGER. 
I’lunicc, decomposition of, 295 
„ distribution of, 295. 
„ felspathic, 347. 
„ liparitic, 205-296, 349, 350. 
„ recognition of minute particles of, 25, 
297. 
„ vesicular, 335. 
Putrefaction, 256, 264, 277. 
Puy-de-Domc, 406. 
Pyrites, 22, 326, 381, 388. 
Pyrolusite, 367, 369. 
Pyrope, 21. 
Pyroxene, 22, 217, 243, 312, 338. 
„ monoclinic, 319, 326, 332. 
„ rhombic, 296, 313, 319, 326, 332. 
Pyroxenic minerals, 374. 
QualiUrtive analyses of manganese nodules, 418-419, 
468- 469. 
(j>uantitative analyses of manganese nodules, 419-423, 
469- 470. 
Quartz, 22-23, 25, 32, 217, 226, 231, 238, 241, 296, 
313, 316, 317, 318, 319, 320, 322, 324, 
325, 326, 365, 381, 384, 389, 39-3, 396, 
407. 
„ vein, 23, 326. 
Quartziferous dioritc, 163. 
(^tuartzite, xxviii, 152, 163, .231, 322, 323. 
„ metamorphic, 322. 
Q>uatemary period, 322. 
Quebec group of rocks, 384. 
QuLstenthal, Devonian dolomitic clay of, 199. 
Kadiolaria, xxi, xxiii, xxvi, 18, 2.3, 37-147, 258, 263, 
281, 233-284, 289, 355, 357, 
391. 
,, composition of .skeletons of, 205. 
„ in Kadiolarian Ooze, 205. 
„ solution in sea-water of, 205. 
Kadiolarian Ooze, .xxix, .31, 186, 189, 203-208 
„ ,, analyses of, 206-208, 435-4.36 
,, „ area of, 208, 248. 
„ „ average composition of, 206. 
„ „ average depth of, 206, 248. 
„ „ carbonate of lime in, 206. 
„ ,, distribution of, 208. 
,, „ fine wa-shings in, 206. 
„ „ mineral particles in, 206. 
„ „ Kadiolaria in, 205. 
„ „ rate of dcjiosition of, 412. 
„ „ siliceous organisms in, 206 
Raine Island, 379. 
„ deposits between New Hebrides and, 
90-93, 168-169. 
„ „ off, 92-93, 169-170. 
“ Rambler,” the, 30. 
Rammelsberg, C. F., 457. 
Rai-e elements in manganese nodules, 417-423. 
Rate of depo.sition in relation to secondary chemical 
products, 411-412. 
„ ,, of Blue Mud, 411. 
,, „ „ Coral Mud, 411. 
„ „ ,, Coral Sand, 411. 
,, ,, „ Diatom Ooze, 412. 
„ „ ,, glauconitic deposits, 411. 
„ „ ,, Globigerina Ooze, 411, 412. 
„ ,, „ Green Mud, 411. 
,, ,, „ Green Sand, 411. 
„ ,, ,, pelagic deposits, 411, 412. 
„ ,, ,, Pteropod Ooze, 411, 412. 
,, ,, ,, Radiolarian Ooze, 412- 
„ „ „ Red Clay, 412. 
,, ,, „ terrigenous deposits, 411. 
„ ,, „ Volcanic Mud, 411. 
„ „ „ Volcanic Sand, 411. 
Rate of fall of organisms in sea-water, 278. 
Rattray, John, 282. 
Recent age of deposits, 315. 
„ marine formations in general, 184-188. 
,, volcanic minerals in general, 318-320. 
„ „ products, 292-320. 
Recognition of minute particles of pumice, 25, 
297. 
Red 
Red 
Clay, xxix, 31, 186, 189, 190-203. 
„ analyses of, 197-202, 425-435. 
,, area of, 202-203, 248. 
„ average composition of, 197. 
,, avej-age depth of, 190, 248. 
„ carbonate of lime in, 193. 
„ distribution of, 202-203. 
„ fine Ava.sliings in, 196-197. 
„ mineral particles in, 195-196. 
„ rate of deposition of, 412. 
„ siliceous organisms in, 193. 
^lud, 186, 234-236. 
„ analyses of, 2.35, 236, 444-445. 
„ area of, 236, 248. 
„ average composition of, 235. 
,, average depth of, 234, 248. 
,, carbonate of lime in, 234. 
,, distribution of, 236. 
„ fine washings in, 235. 
h 
