improving to a young naturalist, than a journey in distant countries. It both sharpens, and partly allays that want and craving, which, as Sir J. Herschel remarks, a man experiences although every corporeal sense be fully satisfied. The excitement from the novelty of objects, and the chance of success, stimulate him to increased activity. Moreover, as a number of isolated facts soon become uninteresting, the habit of comparison leads to generalization. On the other hand, as the traveller stays but a short time in each place, his descriptions must generally consist of mere sketches, instead of detailed observations. Hence arises, as I have found to my cost, a constant tendency to fill up the wide gaps of knowledge, by inaccurate and superficial hypotheses. But I have too deeply enjoyed the voyage, not to recommend any naturalist, although he must not expect to be so fortunate in his companions as I have been, to take all chances, and to start, on travels by land if possible, if otherwise on a long voyage. He may feel assured, he will meet with no difficulties or dangers, excepting in rare cases, nearly so bad as he beforehand anticipates. In a moral point of view, the effect ought to be, to teach him good-humoured patience, freedom from selfishness, the habit of acting for himself, and of making the best of every In short, he ought to partake of the characteristic qualities of most sailors. Travelling ought also to teach him distrust; but at the same time he will discover, how many truly kind-hearted people there are, with whom he never before had, or ever again will have any further communication, who yet are ready to offer him the most disinterested assistance. occurrence. NOTE.—The snake, described at page 96, with the curious habit of vibrating its tail, is a new species of Trigonocephalus, which M. Bibron proposes to call T. crepitans. ( 507 ) IN DE X. Azara on range of carrion-hawks, 59 on habits of carrion-hawks, 57 on new plants springing up, on great droughts, 133 Abbott, Mr., on spiders, 35 of Australia, 433 to 450 ports large animals, 85 on Holuthuriæ, 465 stratified, in Andes, 315 in Brazil, 34 Pacific and Indian oceans, 480 fossil animals allied to, carrion-hawks, 184 on rain in La Plata, 47 Bachman, Mr., on carrion-hawks, 185 --scenery of, 495 217 dung-feeders, 490 on a fungus, 32 on Cyttaria, 236 378, 394 Blackwall, Mr., on spiders, 161 recent in Pampas, 134 fossil, 81, 127, 130, 155, 173 posit, 10 of Incas, 334, 356 to 359, -, on ostrich-eggs, 91 on perforated stones, 33 Camelidæ, fossil animal allied to, 172 fossil allied to, 82 - good to eat, 117 cruelty to mice, 199 killed by great droughts, 134, know each other, 14.5 wild at the Falkland Islands, of discoloured sea, 14 on coral reefs, 467 in vegetation of St. Helena, lago, 375 features of country, 254 forests of, and climate, 243 Button, Jemmy, 207 on an Indian killing his child, Cacti, 165, 261, 374 of trees at King George's Sound, 450 Ascension, 9 Chiloe, roads of, 274, 292 inhabitants of, 273, 276 climate of, 243 ornithology of, des, in Chile, 256 Antarctic Islands, 248 , change of, in Chile, 357 on Corcovado, 28 at sea, 402 out at sea, 159 of St. Julian, 170 on a marine lizard, 386 on transport of seeds, in Cordillera, 420 condition of, in New South town of, 354 , stinging species of, 464 , dead, 460, 478 --, volcano, 291. different productions on Cordillera, passage of, 314 structure of valleys, 315 rivers of, 316 of Copiapó, 360 tered at Buenos Ayres, 121 at Keeling Island, 462 at St. Paul's, 10 of Elevation, 485 fossil species of, 82 Ehrenberg, Prof., on infusoria in in tuff on phosphorescence on noises from a hill, Andes, 326 297, 310, 344, 362, 369 B. Blanca, 83 within human period, 371 Brazil, 34 St. Helena, 490 absent in intertropical - on plains of Santa of Tierra del Fuego, 247 174, 434, 441, 448 of species, causes of, 174 of man in New South sea, 306 effects of, on rocks, 257, effects of, on sea, 302, effects of, on a river-bed, line of vibration of, 307 tossing fragments from twisting movement of, on infusoria in Pam- in the in Pata- in Fue- Falconer, Dr., on the Sivatherium, on rivers in Pam- pas, 106 |
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