The Voyage Of The Beagle By Charles Darwin





































































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Hence we may safely conclude, that within the Indo-human
period there has been an elevation, as before alluded to - Page 297
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Hence We May Safely Conclude, That Within The Indo-Human Period There Has Been An Elevation, As Before Alluded To, Of More Than Eighty-Five Feet; For Some Little Elevation Must Have Been Lost By The Coast Having Subsided Since The Old Maps Were Engraved.

At Valparaiso, although in the 220 years before our visit, the elevation cannot have exceeded nineteen feet, yet subsequently to 1817, there has been a rise, partly insensible and partly by a start during the shock of 1822, of ten or eleven feet.

The antiquity of the Indo-human race here, judging by the eighty-five feet rise of the land since the relics were embedded, is the more remarkable, as on the coast of Patagonia, when the land stood about the same number of feet lower, the Macrauchenia was a living beast; but as the Patagonian coast is some way distant from the Cordillera, the rising there may have been slower than here. At Bahia Blanca, the elevation has been only a few feet since the numerous gigantic quadrupeds were there entombed; and, according to the generally received opinion, when these extinct animals were living, man did not exist. But the rising of that part of the coast of Patagonia, is perhaps no way connected with the Cordillera, but rather with a line of old volcanic rocks in Banda Oriental, so that it may have been infinitely slower than on the shores of Peru. All these speculations, however, must be vague; for who will pretend to say that there may not have been several periods of subsidence, intercalated between the movements of elevation; for we know that along the whole coast of Patagonia, there have certainly been many and long pauses in the upward action of the elevatory forces.

[1] Vol. iv. p. 11, and vol. ii. p. 217. For the remarks on Guayaquil, see Silliman's Journ., vol. xxiv. p. 384. For those on Tacna by Mr. Hamilton, see Trans. of British Association, 1840. For those on Coseguina see Mr. Caldcleugh in Phil. Trans., 1835. In the former edition I collected several references on the coincidences between sudden falls in the barometer and earthquakes; and between earthquakes and meteors.

[2] Observa. sobre el Clima de Lima, p. 67. - Azara's Travels, vol. i. p. 381. - Ulloa's Voyage, vol. ii. p. 28. - Burchell's Travels, vol. ii. p. 524. - Webster's Description of the Azores, p. 124. - Voyage a l'Isle de France par un Officer du Roi, tom. i. p. 248. - Description of St. Helena, p. 123.

[3] Temple, in his travels through Upper Peru, or Bolivia, in going from Potosi to Oruro, says, "I saw many Indian villages or dwellings in ruins, up even to the very tops of the mountains, attesting a former population where now all is desolate." He makes similar remarks in another place; but I cannot tell whether this desolation has been caused by a want of population, or by an altered condition of the land.

[4] Edinburgh, Phil. Journ., Jan., 1830, p. 74; and April, 1830, p. 258 - also Daubeny on Volcanoes, p. 438; and Bengal Journ., vol.

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