Studies Scientific & Social, 1. köideMacmillan and Company, 1900 - 532 pages |
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Page 1
... mountain stream , being bounded on each side by a wall of rock , eighty or a hundred feet high . At the two ex- tremities , these walls approached each other , forming narrow ravines , through which the little river entered and escaped ...
... mountain stream , being bounded on each side by a wall of rock , eighty or a hundred feet high . At the two ex- tremities , these walls approached each other , forming narrow ravines , through which the little river entered and escaped ...
Page 4
... mountain range , forming the western edge of the lofty table - land of which the Rocky Mountains form the eastern border , has a very gradual upward slope from the central valley of California , the distance from the foothills to the ...
... mountain range , forming the western edge of the lofty table - land of which the Rocky Mountains form the eastern border , has a very gradual upward slope from the central valley of California , the distance from the foothills to the ...
Page 5
... mountain range . This remarkable valley may be said to average about half a mile in vertical depth , but some of the precipices that give it so impressive a character are considerably more than this height , El Capitan at the lower end ...
... mountain range . This remarkable valley may be said to average about half a mile in vertical depth , but some of the precipices that give it so impressive a character are considerably more than this height , El Capitan at the lower end ...
Page 7
... mountain valleys in the world . Either the domes , or the waterfalls of the Yosemite , or any single one of them even , would be sufficient in any European country to attract travellers from far and wide . The origin of this wonderful ...
... mountain valleys in the world . Either the domes , or the waterfalls of the Yosemite , or any single one of them even , would be sufficient in any European country to attract travellers from far and wide . The origin of this wonderful ...
Page 11
... Mountains , and at its eastern margin is about 1,000 feet above the sea level ; but going westward it rises about ... mountain stream , and is bounded by cliffs increasing from about 1,000 feet near its outlet to about 2,500 feet near ...
... Mountains , and at its eastern margin is about 1,000 feet above the sea level ; but going westward it rises about ... mountain stream , and is bounded by cliffs increasing from about 1,000 feet near its outlet to about 2,500 feet near ...
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Common terms and phrases
abundant adapted Africa allied alluvium Alpine America animals appear apterous argument Asia Australians Azores beautiful BIRD OF PARADISE birds causes characteristic characters coast colour considerable continuous crust curious Darwin denudation distinct Eastern equally erosion erratics Europe European evidence existence extensive fact favourable feet flora flowers forests genera genus geological geologists glacial glacier gorge groups Guinea hair ice age ice-sheet important individual inhabit insects islands Lake Zurich lakes land larvæ lemurs less Madeira Mahoris Malay miles Miocene modification monkeys moraine mountain native natural selection naturalists Nearctic nearly North occur ocean organic origin origin of species Palearctic Papuans peculiar phenomena plants Polynesians portion probably produced Professor race regions remarkable Rhone glacier river rock rocky slopes species streams supposed surface tail theory thickness tion trees tribes tropical valley valley-lakes variation varied whole winged writers Yosemite YOSEMITE VALLEY
Popular passages
Page 289 - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.
Page 371 - Nothing is easier than to admit in words the truth of the universal struggle for life, or more difficult— at least I have found it so— than constantly to bear this conclusion in mind. Yet unless it be thoroughly engrained in the mind, the whole economy of nature, with every fact on distribution, rarity, abundance, extinction, and variation, will be dimly seen or quite misunderstood.
Page 10 - We conceive that, during the process of upheaval of the Sierra, or, possibly, at some time after that had taken place, there was at the Yosemite a subsidence of a limited area, marked by lines of ' fault' or fissures crossing each other somewhat nearly at right angles. In other and more simple language, the bottom of the Valley sank down to an unknown depth, owing to its support being withdrawn from underneath during some of those convulsive movements which must have attended the upheaval of so extensive...
Page 342 - In my opinion, the greatest error which I have committed has been not allowing sufficient weight to the direct action of the environments, ie, food, climate, &c., independently of natural selection . . . When I wrote the 'Origin,' and for some years afterwards, I could find little good evidence of the direct action of the environment; now there is a large body of evidence, and your case of the Saturnia is one of the most remarkable of which I have heard.
Page 12 - ... vertical displacement for the small area implicated which makes this a peculiar case; but it would not be easy to give any good reason why such an exceptional result should not be brought about, amid the complicated play of forces which the elevation of a great mountain chain must set in motion. By the adoption of the subsidence theory for the formation of the Yosemite, we are able to get over one difficulty which appears insurmountable with any other. This is, the very small amount of debris...
Page 14 - To descend into some of these valleys, it is necessary to go round twenty miles; and into others, the surveyors have only lately penetrated, and the colonists have not yet been able to drive in their cattle. But the most remarkable feature in their structure is, that although several miles wide at their heads, they generally contract towards their mouths to such a degree as to become impassable.
Page 350 - At last gleams of light have come, and I am almost convinced (quite contrary to the opinion I started with) that species are not (it is like confessing a murder) immutable.
Page 9 - The principal features of the Yosemite, and those by which it is distinguished from all other known valleys, are : first, the near approach to verticality of its walls ; second, their great height, not only absolutely, but as compared with the width of the Valley itself; and, finally, the very small amount of talus or debris at the base of these gigantic cliffs.
Page 349 - What cannot nature effect with such means at her disposal? She can do all except either create matter or destroy it. These two extremes of power the Deity has reserved for Himself only; creation and destruction are the attributes of His omnipotence. To alter and undo, to develop and renew — these are powers which He has handed over to the charge of nature.
Page 297 - By JA Allen. (Bulletin of the Mntevm of Comparafire Zoology at Harvard College, Cambridge, Mass., vol. ii. No. 3.) in proportions ; in the length of the head, feet, wings, and tail ; in the length of particular feathers, thus altering the shape of the wing or tail ; in the length of the tarsi and of the separate toes ; and in the length, width, thickness, and curvature of the bill. These variations are by no means small in amount or requiring very accurate measurements for their detection, since...