INDEX. 
Mount Loa, pressure of lava in central con- 
duit of, 217. 
isolation of lines of volcanic forces 
in, 218. 
influence ef dikes on, 361. 
rapidity of formation of, 365. 
subaerial origin of surface rocks, 
413. 
contains the material of a Tahiti, 
TAT 
New Holland, trends of bays and moun- 
tains in, 424, 
see New South Wales and Aus. 
tralia. 
New South Wales, features of, 449. 
Blue Mountains and Austra- 
lian Alps, 450. 
Kangaroo Grounds, 451, 
salt water in, 455, 469. 
392, 
Mount Loa, no deep valleys in, 384. 
Mount St. Helen’s, 615. 
Mountains, origin of, 481, 436. 
arrangement of, on continents, 414, 
422, 430. 
remark on maps of, 611. 
of Australia, 450. 
of Madeira, 550. 
of Oregon, 614. 
Rocky, general features of, 611. 
Andes, Chilian, 557, 560. 
Peruvian, 587. 
of Tahiti, 286, 289. 
Mountain ranges, causes of curvatures in, 
433. 
theory of Elie de Beaumont re- | 
specting, not supported, 424, 
Mya abrupta, 723. 
Myonia, see Meonia, 694. 
Mud, coral, at different islands, 63. 
formation of, 108. 
Nairsa (or Dean’s Island), 48, 54, 75. 
elevation of, 402. 
Namouti, 51, 54. 
Namuka, 406. 
Nanawale eruption, 189, 192. 
Nanouki, 51, 409. 
Nassau Bay, in Tierra del Fuego, observa- | 
tions on the vicinity of, 601. 
Nautilus tenui-planatus, 721. 
Navigator Islands, see Samoa. 
New Caledonia, reefs of, 140. 
New Guinea chain, 421. 
cause of curvature in, 433. 
New Hebrides, 140. 
New Holland, reefs of, 140, 141. 
j 
H 
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climate of, 455. 
rocks of, 456, 495, 733. 
silicified wood of, 483, 491. 
coal formation in, 469. 
Newcastle coal rocks, 470. 
Illawarra coal rocks, 470, 
Agi 
calcareous concretions from 
Glendon, 481. 
‘baked coal rocks of Nobby, 
Sililee ae 
floods of, 454, 520. 
description of fossils of, 681. 
observations on the origin of 
the deposits of, 516. 
origin of valleys of, 527. 
action of sea on coasts of, 
109, 532. 
evidences of changes of level 
in, 533. 
list of works and memoirs on, 
536, 
New Zealand, geological observations on, 
437, 733. 
volcanic cones and phenomena of, 
442, 
hot springs of, 445, 447, 
sulphur of White Island, 447. 
sea-shore platform of, and view of 
“The Old Hat,” 109, 442. 
action of sea on shores, 442. 
Newmarket Island, 407. 
Nobby, rocks of, 511, 733. 
Noeggerathia eequalis, 715. 
distans, 715. 
elongata, 715. 
media, 715. 
spatulata, 715. 
