Scottish Geographical Magazine, المجلد 14Royal Scottish Geographical Society., 1898 |
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مقاطع مشهورة
الصفحة 314 - O wad some Power the giftie gie us To see oursels as ithers see us ! It wad frae mony a blunder free us, An...
الصفحة 504 - ... per cent — and the motion of the upper clouds from the north.west, point to the fact that the south pole is covered by what may be regarded practically as a great permanent anticyclone, more extensive in the winter months than in the summer. Nothing more appalling than these frightful winds, accompanied by tons of drift-snow from the mountains above, can be imagined.
الصفحة 519 - It may be shown that no such extent of unknown area, in any part of the world, ever failed to yield results of practical as well as of purely scientific value ; and it may safely be urged that as it is mathematically certain that the area exists, it is impossible that its examination can fail to add largely to the sum of human knowledge.
الصفحة 504 - There are, however, many indications that the extreme South Polar area is occupied by a vast anticyclone, out of which winds blow towards the girdle of low pressure outside the ice-bound region.
الصفحة 578 - YbarA lagoon. The Salina Grande was also an arm of it — a great inland fiord. The sea, moreover, must have covered large areas of Paraguay, Corrientes, Entre Rios, and Uruguay, and, before the uplifting of the country, it extended south-west to the rivers Chadi-Leofu and the Colorado, lapping round the southern slope of the Ventana range until the curved rim, concave to the north-east, which connects this with the Sierra de Cordova, was sufficiently elevated to completely cut off its south-western...
الصفحة 511 - Echinoderms develop their young after a fashion which precludes the possibility of a pelagic larval stage. The young are reared within or upon the body of the parent, and have a kind of commensal connection with her till they are large enough to take care of themselves. A similar method of direct development has been observed in eight or nine species of Echinoderms from the cold waters of the northern hemisphere. On the other hand, in temperate and tropical regions the development of a free-swimming...
الصفحة 505 - Antarctic Land. Is there an Antarctic continent ? It has already been stated that the form and structure of the Antarctic icebergs indicate that they were built up on, and had flowed over, an extended land surface. As these bergs are floated to the north and broken up in warmer latitudes they distribute over the floor of the ocean a large quantity of glaciated rock fragments and land detritus.
الصفحة 356 - ... feet, while in the, alpine lands it seems to have averaged 7,500 feet, or some 1,000 feet lower than the present. Later climatic oscillations followed, but on a decidedly reduced scale. The effect of these was, naturally enough, most marked in northwestern Europe, decreasing gradually southward, and doubtless eventually fading away in the lower latitudes of the continent. It is not necessary for my present purpose to do more than briefly indicate the general character of these later changes so...
الصفحة 353 - horizons'' of loss may be represented in the low grounds of middle Europe we can not definitely say. But as the materials of the loss are for the most part of fluvio-glacial origin, it is obvious that such accumulations must have been formed during each successive advance of the alpine glaciers. As each glacial epoch passed away those accumulations were greatly modified by the wind, and drifted into the valleys that drain the Alps, where they were subsequently covered and to some extent preserved...
الصفحة 512 - ... action under special conditions — all of these are subjects on which the phenomena of the Antarctic regions are sure to bear directly. If, however, I am asked to specify more particularly the question on which I look for invaluable evidence which can be got nowhere else, I must name, above all others, the most difficult questions involved in quaternary geology. Geologists are nearly all agreed that there has been, very recently, a glacial age— an age in which glacial conditions prevailed...