Principles of geology: or, The modern changes of the earth and its inhabitants, considered as illustrative of geology

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J. Murray, 1840 - 479 páginas
 

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Crítica de los usuarios  - JBreedlove - LibraryThing

Spent over a year reading this one on the can at work. As a geologist its notable for great obervations and deductions and how the science of geology advanced. Great refresher for the field geologist. Leer comentario completo

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Página 234 - A thousand men, that fishes gnaw'd upon; Wedges of gold, great anchors, heaps of pearl, Inestimable stones, unvalued jewels, All scatter'd in the bottom of the sea...
Página 96 - ... in the planetary motions, where geometry has carried the eye so far both into the future and the past, we discover no mark either of the commencement or the termination of the present order.
Página 96 - Author of nature has not given laws to the universe, which, like the institutions of men, carry in themselves the elements of their own destruction. He has not permitted in His works any symptom of infancy or of old age, or any sign by which we may estimate either their future or their past duration. He may put an end, as he no doubt gave a beginning, to the present system at some determinate period of time ; but we may rest assured that this great catastrophe will not be brought about by the laws...
Página 1 - GEOLOGY is the science which investigates the successive changes that have taken place in the organic and inorganic kingdoms of nature : it inquires into the causes of these changes, and the influence which they have exerted in modifying the surface and external structure of our planet.
Página 251 - ... on the proofs of the low antiquity of our species, for it is not controverted by any experienced geologist : indeed, the real difficulty consists in tracing back the signs of man's existence on the earth, to that comparatively modern period, when species, now his contemporaries, began to predominate. If there be a difference of opinion respecting the occurrence in certain deposits of the remains of man and his works, it is always in reference to strata confessedly of the most modern order ; and...
Página 326 - ... is ; in other words, they employed themselves in conjecturing what might have been the course of nature at a remote period, rather than in the investigation of what was the course of nature in their own times. It appeared to them more philosophical to speculate on the possibilities of the past, than patiently to explore the realities of the present, and having invented theories under the influence of such maxims, they were consistently unwilling to test their validity by the criterion of their...
Página 33 - It is indeed a mighty city, replied he, we know not how long it has existed, .and our ancestors were on this subject as ignorant as ourselves. Five centuries afterwards as I passed by the same place I could not perceive the slightest vestige of the city. I demanded of a peasant who was gathering herbs upon its former site, how long it had been destroyed. In sooth a strange question, replied he, the ground here has never been different from what you now behold it.
Página 56 - He knew the seat of Paradise, Could tell in what degree it lies, And, as he was disposed, could prove it Below the moon, or else above it...
Página 148 - But we may readily believe that any one cognizant of the food of the elk, might be likely to have suspected cryptogamic vegetation to have entered more largely into the food of a still more northern species of the deer tribe. And I can by no means subscribe to another proposition by the same eminent...
Página 121 - This easy and universal belief, so expressive of the sense of mankind, may be ascribed to the genuine merit of the fable itself. We imperceptibly advance from youth to age, without observing the gradual, but incessant change of human affairs ; and even in our larger experience of history, the imagination, is accustomed by a perpetual scries of causes and effects, to unite the most distant revolutions.

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