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style=margin-left:2em; text-indent:-2em * Sulphate of soda with common salt, 66, 369
 * Swainson, Mr., on cuckoos, 53
 * Sydney, 431


 * Tabanus, 170
 * Tahiti (Otaheite), 403
 * , three zones of fertility, 406
 * Talcahuano, 302
 * Tambillos, Ruinas de, 356
 * Tameness of birds, 398
 * Tapacolo and Turco, 270
 * Tapalguen, Sierra, flat hills of quartz, 116
 * Tarn, Mount, 234
 * Tasmania, 446
 * Tattooing, 404, 426
 * Temperance of the Tahitians, 411
 * Temperature of Tierra del Fuego and Falkland Islands, 242
 * of Galapagos, 373, 377
 * Tercero, Rio, fossils in banks of, 127
 * Terraces in valleys of Cordillera, 315
 * of Coquimbo, 343
 * of Patagonia, 172, 181
 * Tertiary formations of the Pampas, 81, 129, 155
 * of Patagonia,170, 329
 * in Chile, epochs of, 344
 * Teru-tero, habits of, 114
 * Testudo, habits of, 382, 394
 * Theory of lagoon-islands, 472
 * Theristicus, 165
 * Thistle beds, 119, 124, 148
 * Thunder-storms, 62
 * Tierra del Fuego, 204 to 251
 * , climate and vegetation of, 242
 * , zoology of, 236
 * , entomology of, 238
 * Tinamus rufescens, 113
 * Tinochorus Eschscholtzii, 94
 * Toad, habits of, 97
 * not found in oceanic islands, 381
 * Torrents in Cordillera, 316, 321
 * Tortoise, habits of, 382, 394
 * Toxodon, 82, 127, 130, 155
 * Transparency of air in Andes, 325
 * in St. Jago, 4
 * Transport of seeds, 392, 454
 * of boulders, 187, 247
 * Transport of stones in roots of trees, 461
 * of fragments of rock on banks of the St. Cruz river, 180
 * Travertin with leaves of trees, Van Diemen's Land, 448
 * Tree-ferns, southern limits of, 244
 * , 448
 * Trees, absence of, in Pampas, 46
 * , floating, transport stones, 461
 * silicified, vertical, 332
 * , size of, 353
 * , time required to rot, 301
 * Tres Montes, 282
 * Trichodesmium, 14
 * Trigonocephalus, 96
 * Tristan d'Acunha, 399, 456
 * Trochilus, 271
 * Tropical scenery, 405
 * Tschudi, M., on subsidence, 369
 * Tubes, siliceous, formed by lightning, 59
 * Tucutuco, habits of, 50
 * , fossil species of, 82
 * Tuff, craters of, 373
 * , Infusoria in, 494
 * Tupungato, volcano of, 324
 * Turco, El, 270
 * Turkey buzzard. 58, 184, 284
 * Turtle, manner of catching, 459
 * Type of organization in Galapagos islands, American, 393
 * Types of organization in different countries, constant, 173
 * Tyranuus, 138


 * Ulloa on hydrophobia, 353
 * on Indian buildings, 357
 * Unanùe, Dr., on hydrophobia, 353
 * Uruguay, Rio, 139, 147
 * , not crossed by the Bizcacha, 124
 * Uspallata range and pass, 331


 * Vacas, Rio, 333
 * Valdivia, 297
 * , forests of, 298, 301
 * Valley of St. Cruz, how excavated, 181
 * , dry, at Copiapó, 355
 * Valleys, excavation of, in Chile, 315, 355
 * of Tahiti, 408, 412
 * in Cordillera, 315