754 
Tierra del Fuego, observations on the vici- 
nity of Nassau Bay, 601. 
fossil belemnite of, 604, 720. 
Tinakoro, an active volcanic island, 25. 
Tonga Islands, 188, 406. 
Tongatabu reefs, 39, 406. 
coral mud of, 63. 
Trachyte and pumice, Feejees, 346: 
Trachyte of the Sacramento Bute, 650. 
Trachytic rocks, Nassau Bay, 604. 
of Teneriffe, 373. 
Trends of Pacific islands, 414. 
of ranges of islands along the Asiatic 
coast, 419. 
in the Atlantic and on the continents, 
422, 
Trigonia Lorentii, 721. 
Tubuai, 285, 405. 
Tufa of Feejees, 346. 
of Hawaiian Islands, 239, 260, 268. 
of Madeira, 551. 
of Manilla, 541. 
of Oregon, 652. 
of Tahiti, 295, 302. 
of Upolu, 316. 
Tufa craters of Hawaiian Islands, 237, 240, 
260, 271. 
of Samoan Islands, 325, 333. 
of Tahiti, 302. 
general characters of, 355. 
chalky coating on layers of, 241. 
containing coral, 244, 327. 
Tutuila, 309, 733. 
Tyerman and Bennet, mountains of Tahiti, 
288, 289. 
a slide in the Matavai Valley, 293. 
on Rurutu, 405. 
Umpqua district, 622. 
Upolu, general features of, 312. 
volcanic cones of, 313. 
fountains on shores of, 314. 
rocks of, 315. 
dikes in, 317. 
extinct craters of, 317. 
caverns in, 323. 
era of eruptions, 330. 
INDEX. 
Upolu, changes of level, 332. 
reefs, thickness of, 47. 
harbour of Apia, 115. 
harbour of Falifa, 117. 
Urosthenes australis, 681. 
Valleys of the Pacific islands, origin of, 79. 
due to running water of the land, 384. 
action of the sea in producing, 381. 
deeper on the older islands, 384, 391. 
of Madeira, 549. 
of New South Wales, 450, 526. 
of Oahu and Hanapepe, 236, 263, 385. 
of Tahiti, 287. 
of tufa cones of Oahu, 240, 388. 
Val-del-Bove, exemplified in Kilauea and 
Hale-a-kala, 363. 
Valparaiso, 558. 
Vancouver, Cowlitz and Nisqually districts, 
621. 
Vegetation, height of, on Mount Loa, 167. 
height of, on Mount Kea, 167. 
Vanikoro Group, reefs of, 140. 
Vanua Lebu, 341. 
Vavau, 406. 
Veins, in granitic rocks of Chili, 562, 565. 
of hornblendic schist, 578. 
Venus angustifrons, 724. 
bisecta, 724. 
brevilineata, 724. 
lamellifera, 724. 
Vincennes Island, 61, 74. 
Viti, see Peeve. 
Viti Lebu, 339. 
Volcanic action and eruption of Mount Loa, 
mode of, 216. 
and boiling process at Kilauea, 
171, 173, 176, 193, 203, 223. 
phases of, 222. 
promoted by fresh waters, 221, 
368. 
seldom promoted by pulsations in 
the central igneous fluids of the 
globe, 369. 
flames during, 184. 
views of G. Bischof on, objected 
to, 369. 
