Scottish Geographical Magazine, Volum 15Royal Scottish Geographical Society., 1899 |
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Altres edicions - Mostra-ho tot
Frases i termes més freqüents
Amorgos Antarctic Arctic Bahr-el-Ghazal bank basin bêche-de-mer Blencathra Blue Nile British Buriats Cape Captain Caucasus coast colony cultivation deep deposits depth direction distance district east eastern elevation expedition exploration extends farther fathoms feet Fouta Djallon geographical geological glaciers harbour height hills Hope Island Huronian important inches Indian inhabitants interesting island journey Kamchatka Khartum lake land Mbomu mean mountains natives navigation Niger Nile north-east north-west northern Novaya Zemlya observations ocean Olkhon pass Petropavlovsk plain plateau present probably Professor province railway rain rainfall range region ridge rises river rocks route running Russian sand sandstone sea-level shore side slope southern Spitzbergen square miles streams summer summit surface Tarim basin temperature territory Tian-Shan tion trade travellers tribes tributaries Ubangi upper valley vegetation vessel village volcanic voyage watershed western whole winds winter Yakoma yards
Passatges populars
Pàgina 442 - ... fortunes and their own at the end of the fifteenth, and the beginning of the sixteenth centuries in all the courts of western Europe.
Pàgina 457 - A dash at the South Pole is not, however, what I now advocate, nor do I believe that is what British science, at the present time, desires. It demands rather a steady, continuous, laborious, and systematic exploration of the whole southern region with all the appliances of the modern investigator.
Pàgina 451 - Hence I infer that the cause which elevates the land involves an expansion of the underlying magmas, and the cause which depresses it is a shrinkage of the magmas ; the nature of the process is at present a complete mystery.
Pàgina 494 - Far as Hutton could follow the succession of events registered in the rocky crust of the globe, he found himself baffled by the closing in around him of that dark abysm of time into which neither eye nor imagination seemed able to penetrate. He well knew that, behind and beyond the ages recorded in the oldest of the Primitive rocks, there must have stretched a vast earlier time, of which no record met his view. He did not attempt to speculate beyond the limits of his evidence. 'I do not pretend...
Pàgina 496 - He thus advanced beyond the strictly geological basis of reasoning, and committed himself to statements which, like some made also by Hutton, seem to have been suggested by certain deductions of the French mathematicians of his day regarding the stability of the planetary motions. His statements have been disproved by modern physics ; distinct evidence, both from the earth and the cosmos, has been brought forward of progress from a beginning which can be conceived, through successive stages to an...
Pàgina 494 - What more can we require ? Nothing but time. It is not any part of the process that will be disputed ; but after allowing all the parts, the whole will be denied ; and for what ? — only because we are not disposed to allow that quantity of time which the ablution of so much wasted mountain might...
Pàgina 447 - The inorganic constituents of the pelagic deposits are for the most part derived from the attrition of floating pumice, from the disintegration of water-logged pumice, from showers of volcanic ashes, and from the debris ejected from submarine volcanoes, together with the products of their decomposition.
Pàgina 495 - But if the succession of worlds is established in the system of nature, it is in vain to look for anything higher in the origin of the earth. The result, therefore, of this physical inquiry is, that we find no vestige of a beginning, — no prospect of an end.
Pàgina 494 - In these rocks he traced the operation of the same slow and quiet processes which he observed to be at work at present in gradually transforming the face of the existing continents. When he stood face to face with the proofs of decay among the mountains, there seems to have arisen uppermost in his mind the thought of the immense succession of ages which these proofs revealed to him. His observant eye enabled him to see ' the operations of the surface wasting the solid body of the globe, and to read...
Pàgina 132 - ... prehnite in trap (the trap is felspar, deeply coloured with hornblende), with disseminated native copper ; the copper, in some specimens, was crystallized in rhomboidal dodecahedrons. We also found some large tabular fragments, evidently portions of a vein consisting of prehnite, associated with calcareous spar, and native copper. The Indians dig wherever they observe the prehnite lying on the soil, experience having taught them that the largest pieces of copper are found associated with it.