338 



INDEX. 



Rain-fall at the Island of Ascension, ii., 

 224, 255. 



Rain-water in universal use in Bermudas, 

 i., 277. 



Rat Island, Fernando Noronha group, ii., 

 108. 



Red clay of the bed of the Atlantic, its 

 nature and origin, i., 177, 181, 187, 190, 

 193, 212, 214, 215, 262, 269, 293; ii., 

 253, 255. 



Red clay and globigerina ooze, tabular 

 view of their proportions, i., 215. 



Red-coral fishery, Cape Verde Islands, ii., 

 72, 73. 



" Red earth " of Bermudas, i., 293, 294, 

 325,326. 



Religious ceremonv in San Miguel, ii., 48, 

 49. 



Rhabdoliths, i., 198, 209, 216. 



Rhabdospheres, specimens from the sur- 

 face, 500 and 2000 times the natural 

 size, i., 211, 212. 



Rhizoerinus, ii., 91. 



Rhizopods, i., 216. 



Rhus toxicodendron, of Bermudas, i., 305. 



Ribiera Grande, San Miguel, ii., 38. 



Richards, Admiral, Sir George, F.R.S., his 

 aid to the expedition, i., 23, 80. 



"Rock-hoppers," on Inaccessible Island, 

 ii., 146, 168. 



Rotalia, i., 200. 



Royal Society, proposal for a circumnavi- 

 gating expedition, i., 23. 



S. 



St. Elmo's fires, i., 273. 



St. George's Island, Bermudas, i., 277, 312. 



St. Michael's Mount, Fernando Noronha, 

 ii., 107. 



St. Paul's Rocks, ii., 93 ; photographic 

 vieVs of, 94, 98. 



St. Thomas, West Indies, i., 248. 



SaleniadiE : Salenia varinpina, i., 145. 



Sand (coral), Bermudas Islands formed 

 by, i., 285, 287 ; garden, cottage, and 

 cedar grove overwhelmed by it, 289- 

 291 ; its conversion into limestone, 291. 



Sand-bath, sea-going, on board the " Chal- 

 lenger," i., 47. 



Sand-glacier, Elbow Bay, Bermudas, i., 289. 



San Domingo, Cape Verde Islands, ii., 74. 



San lago. Cape Verde Islands, ii., 71, 72. 



San Jorge, Azores, ii., 30. 



San Maria, capital of San Miguel, A9ores, 

 ii., 24. 



San Miguel, ii., 24, 30-50. 



Santo Amaro, Brazil, ii., 126. 



San Vicente, natives of, i., 375 ; ii., 68 ; 

 Porto Grande, 231. 



Sargasso Sea, ii., 15, 24. 



Sid-f/usnum baccife7ttm, ii., 290. 



ScaljM/llum regium, female, ii., 11, 12; 

 male, 14. 



Schmidt, Professor Oscar, on Rhabdo- 

 spheres, i., 209. 



Schouw, Professor G. F., relation of baro- 

 metric pressure to latitude, i., 88. 



Schultze, Professor Max, on Eupledella, i., 

 137; on Globigerina, 200 ; on Globige- 

 rina and Orbulina, 207. 



Sea-birds, their scarcity near Bermudas, 

 ii., 15. 



Sea-hen, ii., 162. 



Seal fisherv of Tristan d'Acunha Islands, 

 ii., 135, i36. 



Sea-slugs,ii., 131, 186. 



Sea-urchins, i., 145-149, 349, 368; ii., 

 193-196, 198-201, 290, 297. 



Sea -water in the Atlantic; general con- 

 elusions from the "Challenger" expe- 

 dition : temperature, ii., 256 ; density, 

 302 ; amount of carbonic acid and oxy- 

 gen, 310. 



Sea-water, boiling atmospheric gases out 

 of, 36, 37. 



Sea-weed, i., 284 ; ii., 290. 



Serial temperature soundings. (See Tem- 

 perature.) 



Scrjmla, I, 284. 



Serpula borings, i., 298. 



" Serpuline reefs," i., 285, 333. 



Sete-Cidades, crater of, A9ores, ii., 46. 



Setubal, dredging near, i., 120. 



Sharks, i., 192. 



Sharks' teeth, semi-fossil, from the ocean 

 bed, ii., 300, 321. 



Sheep of Falkland Islands, ii., 181. 



Shells, land, of Madeira, i., 152. 



Sialia Wihoni, i., 279. 



Siemens, Charles W., F.R.S., deep-sea tem- 

 perature apparatus, i., 58, 82, 84, 88, 229. 



Six's registering thermometers, i., 22 ; ii.. 

 259. 



Slavery in Bermudas, i., 276. 



" Slip water-bottle," used in the expedi- 

 tion, i., 47, 168. 



Sloggett, Henry C, appointed sublieuten- 

 ant to the " Challenger," i., 24. 



Smith's " History of Virginia ;" account 

 of Bermudas, i., 274-276, 293. 



Smith and Beck's binocular microscope, 

 used in the expedition, i., 29. 



Soil of Bermudas, report from Professor 

 Abel, F.R.S., on, i., 323. 



Solar halo, i., 355. 



Solarium, i., 185. 



" Soldier crab," marine shells transported 

 inland by the, i., 298. 



