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style=margin-left:2em; text-indent:-2em * Quoy and Gaimard on stinging corals, 464
 * on coral-reefs, 476

Reefs of coral, 465 to 482 Reeks, Mr., analysis of salt, 66
 * Rabbit, wild, at the Falkland Islands, 193
 * Rain at Coquimbo, 338, 347, 348
 * at Rio, 29
 * and earthquakes, 351
 * in Peru, 364, 365
 * in Chile, formerly more abundant, 357
 * , effects on vegetation, 338
 * Rana Mascariensis, 382
 * Rat, only aboriginal animal of New Zealand, 427
 * Rats at Galapagos, 378
 * at Ascension, 492
 * at Keeling Island, 456
 * Rattle-snake, species with allied habit, 97
 * Red snow, 322
 * Reduvius, 330
 * Reef at Pernambuco of sandstone, 498
 * , Barrier, 469, 476
 * , Fringing, 472
 * bones, 155
 * salt and shells, 370
 * Remains, human elevated, 370
 * Remedies of the Gauchos, 128
 * Rengger on the horse, 233
 * Reptiles absent in Tierra del Fuego, 237
 * at Galapagos, 381
 * Respiration difficult in Andes, 322
 * Retrospect, 50
 * Revolutions at Buenos Ayres, 140
 * Rhinoceroses live in desert countries, 86
 * , frozen, 89, 250
 * Rhynchops nigra, 137
 * Richardson, Dr., on mice of North America, 378
 * , on polished rocks, 251
 * , on frozen soil, 88, 248
 * , on eating fat, 117
 * Richardson, Dr., on geographical distribution, 131
 * Rimsky atoll, 466
 * Rio de Janeiro, 19
 * Plata, 39
 * Negro, 63, 149
 * Colorado, 70
 * S. Cruz, 177
 * Sauce, 106
 * Salado, 118
 * Rivers, power of, in wearing channels, 180, 320
 * River-bed, arched, 358
 * River-courses dry in America, 107
 * Rocks burnished with ferruginous matter, 12
 * Rodents, number of in America, 49, 179
 * , fossil species of, 82
 * Rosas, General, 71, 103, 140
 * Ruins of Callao, 369
 * of Indian buildings in Cordillera, 356, 368


 * S. Cruz, 177
 * Salado, Rio, 118
 * Salinas at the Galapagos Archipelago, 377
 * in Patagonia, 65, 170
 * Saline efflorescences, 78
 * Salt with vegetable food, 110
 * , superficial crust of, 364
 * , with elevated shells, 369
 * Salt-lakes, 65, 170, 377
 * Sandwich Archipelago, no frogs at, 382
 * Land, 248
 * San Pedro, forests of, 281
 * Sand-dunes, 75
 * Sand, hot from sun's rays, at Galapagos Archipelago, 377
 * , noise from friction of, 361
 * Sandstone of New South Wales, 437
 * , reef of, 498
 * Santa Cruz, river of, 177
 * Santiago, Chile, 262
 * Sarmiento, Mount, 233, 241
 * Sauce, Rio, 106
 * Saurophagus sulphureus, 54
 * Scarus eating corals, 464
 * Scelidotherium, 82
 * Scenery of Andes, 318
 * Scissor-tail, 138
 * Scissor-beak, habits of, 137