Keeling Island, subsidence of, 500.
Kelp, or sea-weed, 255.

Kendall, Lieut., on a frozen body,
265.

Kingfishers, 12, 151.

King George's Sound, 474.

Labourers, condition of, in Chile,
283.

Lagoon-islands, 425, 478, 491.
Lagostomus, 136.

Lake, brackish, near Rio, 31.

with floating islands, 282.

formed during earthquake, 392.
Lamarck on acquired blindness, 62.
Lampyris, 40.

Lancaster, Capt., on a sea-tree, 112.
Land-shells, 368, 515, 516.
Lazo, 54, 167, 204.
Leaves, fall of, 251.

fossil, 473.

Leeks in New Zealand, imported,

350.

Mexico, elevation of, 143.
Miasmata, 386, 459.

Mice inhabit sterile places, 380.
number of, in America, 60.
how transported, 305, 400.
different on opposite sides of
Andes, 346.

of the Galapagos, 400.

of Ascension, 518.

Millepora, 489.

Mills for grinding ores, 283.
Mimosæ, 36.

Mimus, 65, 418, 422.

Miners, condition of, 277, 282, 359,
366.

Mines, 276, 360, 365.

how discovered, 336.

Missionaries at New Zealand, 449.
Mitchell, Sir T., on valleys of Aus
tralia, 462.

Mocking-bird, 65, 418, 422.

Molina omits description of certain
birds, 288.

Molothrus, habits of, 63.

Monkeys with prehensile tails, 38.
Monte Video, 51, 155.

Moresby, Capt., on a great crab, 489.
on coral-reefs, 505.

Mount Sarmiento, 249, 257.

Tarn, 250.

Mountains, elevation of, 330.

Movements in granular matter, 112.
Mud, chalk-like, 490.

disturbed by earthquake, 325.
Mules, 334.

Muniz, Sig., on niata cattle, 159.
Murray, Mr., on spiders, 175.

Mylodon, 94, 143, 169.
Myopotamus Coypus, 305.

Negress with goitre, 333.
Negro, Rio, 74, 162.
lieutenant, 87.

New Caledonia, reef of, 494, 496,
502.

Zealand, 440.

Niata cattle, 159.

Noises from a hill, 382.

Noses, ceremony of pressing, 447.
Nothura, 56.

Notopod, crustacean, 175..
Nullipore, incrustations like, 20.
protecting reefs, 524.

Octopus, habits of, 17.
Oily coating on sea, 27.
Olfersia, 20.

Opetiorhynchus, 306.

Opuntia, 278.

Darwinii, 179.

Galapageia, 396.

Orange-trees self-sown, 132.
Ores, gold, 283.

Ornithology of Galapagos, 401, 418.
Ornithorhynchus, 466.

Osorno, volcano of, 290, 292, 309.
Ostrich, habits of, 53, 101.
Ostriches' eggs, 125.
Otaheite, 426.

Otter, 305.

Ova in sea, 27.
Oven-bird, 107.

Owen, Capt., on a drought in Africa,

419.

of Keeling Island, 479.
of St. Helena, 513.
Plata, Rio, 49.

thunderstorms of, 72.
Plover, long-legged, 126.
Polished rocks, Brazil, 22.
Polyborus chimango, 66.
Nova Zelandiæ, 68.
Brasiliensis, 66.
Ponsonby Sound, 236.
Porpoises, 49.

Port Desire, 178.

river of, 119, 184.
St. Julian, 184.

Famine, 249.

Portillo pass, 339, 344.

Porto Praya, 1.

Potato, wild, 302.

Potrero, Seco, 370.

Prairies, vegetation of, 132.

Prévost, M., on cuckoos, 64.

Priestley, Dr., on lightning-tubes,

70.

Procellaria gigantea, habits of, 307.
Proctotretus, 110.

Proteus, blindness of, 62.

Land, 265.

San Pedro, forests of, 298.
Santa Cruz, river of, 191.
Santiago, Chile, 279.

Sarmiento, Mount, 249, 257.
Sauce, Rio, 119.

Saurophagus sulphureus, 64.
Scarus eating corals, 490.
Scelidotherium, 93.

Scenery of Andes, 337.
Scissor-tail, 151.

Scissor-beak, habits of, 151.

Scoresby, Mr., on effects of snow on
rocks, 337.

Scorpions, cannibals, 179.

Scrope, Mr., on earthquakes, 373.
Scytalopus fuscus, 253, 307.

Sea, open, inhabitants of, 176.

-, phosphorescence of, 176.

Sea, distant noise of, 314.
Sea-pen, habits of, 111, 217.
Sea-weed, growth of, 255.
Seals, number of, 302.

Seeds transported by sea, 415, 479.
Serpulæ, protecting reef, 525.
Shark killed by Diodon, 24.
Shaw, Dr., on lion's flesh, 129.
Sheep, infected, 460.

Shelley, lines on Mont Blanc, 182.
Shells, land, in great numbers,
368.

land, at St. Helena, 515.
fossil, of Cordillera, 339.
of Galapagos, 413.

elevated, 95, 143, 184, 270,
364, 391.

-,tropical forms of, far south,

red, 342.

Snow-line on Cordillera, 261, 342,
344.

Society, state of, in La Plata, 51,
170.

state of, in Australia, 468.
Archipelago, 425.

Archipelago, volcanic phenom-

ena at, 500, 506.

Soda, nitrate of, 383.

-, sulphate of, 89.

Soil, frozen, 100, 265.

Spawn on surface of sea, 27.
Species, distribution of, 142, 384.

-, extinction of, 188.

Spiders, habits of, 45-48.

, gossamer, 172.

killed by and killing wasps,

45-48.

on Keeling Island, 481.

on St. Paul's, 20.

Springs, hot, 280.

Strongylus, 43.

Struthio Rhea, 53, 105.
Darwinii, 105.

Strzelecki, Count, 472.
Suadiva atoll, 492.

Subsidence of coral reef, 492-508.
of Keeling Island, 500.

of Patagonia, 186.

of coast of Peru, 390.
of Cordillera, 340, 352.
of coasts of Chile, 365.
of Vanikoro, 501.

of coral reefs great in amount,
504.

cause of distinctness in Ter-
tiary epochs, 366.
Sulphate of lime, 77, 184, 390.
of soda incrusting the ground,

89.

of soda with common salt, 77,

391.
Swainson, Mr., on cuckoos, 63.
Sydney, 455.

404.

not found in oceanic islands,

Torrents in Cordillera, 335, 340.
Tortoise, habits of, 405, 417.
Toxodon, 94, 139, 142, 168.
Transparency of air in Andes, 345.
of air in St. Jago, 14.

Transport of seeds, 415, 479.

of boulders, 201, 264.

of stones in, roots of trees, 487.
of fragments of rock on banks
of the St. Cruz river, 194.
Travertin with leaves of trees, Van
Diemen's Land, 473.

Tree-ferns, southern limits of, 261.

473.

Trees, absence of, in Pampas, 56.
floating, transport stones, 487.
silicified, vertical, 351.
silicified, size of, 373.

time required to rot, 320.

Tres Montes, 299.

Trichodesmium, 25.

Trigonocephalus, 108.

Tristan d'Acunha, 424, 481.

Trochilus, 289.

Tropical scenery, 521.

Tschudi, M., on subsidence, 390.

Tubes, silicious, formed by light-

ning, 70.

Tucutuco, habits of, 61.

fossil species of, 94.

Tuff, craters of, 395.

Infusoria in, 521.

Tupungato, volcano of, 344.
Turco, El, 287.

Turkey buzzard, 69, 199, 302.
Turtle, manner of catching, 484.
Type of organization in Galapagos
Islands, American, 416.

Types of organization in different
countries, constant, 188.
Tyrannus, 151.

Ulloa on hydrophobia, 374.

on Indian buildings, 378.
Unanue, Dr., on hydrophobia, 374.
Uruguay, Rio, 152, 160.

not crossed by the Bizcacha,
136.
Uspallata range and pass, 351.
Vacas, Rio, 353.

Valdivia, 315.

forests of, 316, 320.

Valley of St. Cruz, how excavated,

195.

, dry, at Copiapó, 376.

Valleys, excavation of, in Chile,
334, 376.

of Tahiti, 431, 435.

in Cordillera, 334-

of New South Wales, 462.
Valparaiso, 269, 332.
Vampire bat, 32.

Vapour from forests, 34.
Van Diemen's Land, 470.
Vanellus Cayanus, 127.
Vanessa, flocks of, 172.
Vanikoro, 495, 496, 501.

Vegetation of St. Helena, changes
of, 515.

Vegetation on opposite sides of Cor-
dillera, 346.

-

luxuriant, not necessary to
support large animals, 97.
Ventana, Sierra, 122.
Verbena melindres, 51.
Villa Vicencio, 351.

Virgularia Patagonica, 111, 217.
Volcanic bombs, 520.
Islands, 18.

phenomena, 329.

Volcanoes near Chiloe, 290, 292,
309, 329.

their presence determined by
elevation or subsidence, 506.
Vultur aura, 69, 199, 301.

Waders, first colonists of distant
islands, 402.

Waimate, New Zealand, 445.
Walckenaer, on spiders, 48.
Walleechu tree, 79.

Wasps preying on spiders and killed
by, 46-48.

Water, sold at Iquique, 383.

fresh, floating on salt, 49, 483.
Water-hog, 60.

Waterhouse, Mr., on Rodents, 60,
400.

on the Niata ox, 159.

on the insects of Tierra del
Fuego, 254.

on the insects of Galapagos,
404, 415.

Waves, caused by fall of ice, 240,