Essay on the Theory of the Earth

כריכה קדמית
W. Blackwood, 1827 - 550 עמודים
 

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עמוד 7 - The lowest and most level parts of the earth, when penetrated to a very great depth, exhibit nothing but horizontal strata composed of various substances, and containing almost all of them innumerable marine productions. Similar strata, with the same kind of productions, compose the hills even to a great height. Sometimes the shells are so numerous as to constitute the entire body of the stratum. They are almost...
עמוד 389 - Entire trunks of trees, which are carried by the rivers from other countries and islands, find here, at length, a resting-place, after their long wanderings ; with these come some small animals, such as lizards and insects, as the first inhabitants. Even before the trees form a wood, the...
עמוד 379 - Nothing can be more melancholy, says this traveller, than to walk over villages swallowed up by the sand of the desert, to trample under foot their roofs, to strike against the summits of their minarets, to reflect that yonder were cultivated fields, that there grew trees, that here were even the dwellings of men, and that all has vanished.
עמוד 387 - ... high as the common tides reach. That elevation surpassed, the future remnants, being rarely covered, lose their adhesive property ; and remaining in a loose state, form what is usually called a key, upon the top of the reef. The new bank is not long in being visited by sea-birds : salt plants take root upon it, and a soil begins to be...
עמוד 87 - In short, the shape and structure of the teeth regulate the forms of the condyle, of the shoulder-blade, and of the claws, in the same manner as the equation of a curve regulates all its other properties; and, as in regard to any particular curve, all its properties may be ascertained by assuming each separate property as the foundation of a particular equation ; in the same manner a claw, a shoulder-blade, a condyle, a leg or...
עמוד 379 - Egypt, that summits of the ruins of ancient cities, buried under these sands still appear externally; and that but for a ridge of mountains called the Lybian chain, which borders the left bank of the Nile, and forms, in the parts where it rises, a barrier against the invasion of these sands, the shores of the river, on that side, would long since have ceased to be habitable. " Nothing can be more melancholy...
עמוד 3 - ... genius and science have burst the limits of space, and a few observations, explained by just reasoning, have unveiled the mechanism of the universe. Would it not also be glorious for man to burst the limits of time, and. by a few observations, to ascertain the history of this world, and the series of events which preceded the birth of the human race?
עמוד 239 - Dolomieu, in thinking that if anything in Geology be established it is that the surface of our globe has undergone a great and sudden revolution, the date of which cannot be referred to a much earlier period than five or six thousand years ago...

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