Outline of the Course of Geological Lectures Given in Yale CollegeH. Howe, 1829 - 128 páginas |
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Outline of the Course of Geological Lectures Given in Yale College Benjamin Silliman Sin vista previa disponible - 2019 |
Outline of the Course of Geological Lectures Given in Yale College Benjamin Silliman Sin vista previa disponible - 2012 |
Outline of the Course of Geological Lectures Given in Yale College Benjamin Silliman Sin vista previa disponible - 2019 |
Términos y frases comunes
abyss acids admit agency agents alluvium ancient animals appear beds bituminous coal bowlders catastrophe causes caverns cavities chemical coal combustibles connexion contain Cotopaxi course crater crust crystaline crystals deluge deposited depth diluvial diluvial ocean diluvium earth earthquakes effects elevation entire eruptions Etna evidence exhibited existence facts feldspar fire fluid formation fragmentary rocks fragments geologists geology globe gneiss granite gravel heat hundred ical igneous inhumed lakes lava less lignite limestone masses materials mechanical metals miles mineral mountains natural nearly numerous organized remains origin oviparous pebbles perhaps period petrifaction phenomena physical planet pororoca position present primitive ocean primitive rocks probably produced proved races reason river ruins sand secondary rocks silex similar solid soluble sometimes species specific gravity stones strata structure sufficient supposed supposition surface tertiary thing tide tion torrents transition class trap rocks trilobites vast vegetable violent volcanos WILLIAM MACLURE
Pasajes populares
Página 2 - IDE, of the said District, hath deposited in this office, the title of a book, the right whereof he claims as proprietor, in the words following, to wit : " Inductive Grammar, designed for beginners. By an Instructer." In conformity to the act of the Congress of the United States...
Página 2 - And also to the act, entitled " An act supplementary to an act, entitled " An act for the encouragement of learning, by securing the copies of maps, charts, and books, to the authors and proprietors of such copies during the times therein mentioned," and extending the benefits thereof to the arts of designing, engraving, and etching historical and other prints.
Página 20 - The slides in the White Mountains of New Hampshire, and the Green Mountains of Vermont, have been recently very remarkable.
Página 2 - In conformity to the act of Congress of the United States, entitled " An Act for the encouragement of learning, by securing the copies of Maps, Charts, and Books, to the Authors and Proprietors of such copies, during the time therein mentioned.
Página 20 - Hudson, the Green Mountains of Vermont, and the White Mountains of New Hampshire.
Página 85 - ... between them ; their entire difference, in many cases, from the rocks in the country where they lie, rounded masses and pebbles of primitive rocks being deposited in secondary and alluvial regions, and vice versa ; these and a multitude of similar facts have ever struck us as being among the most interesting of geological occurrences, and as being very inadequately accounted for by existing theories.
Página 21 - On the fatal night, it was impenetrably dark and frightfully tempestuous ; the lonely family had retired to rest, in their humble dwelling, six miles from the nearest human creature. The avalanches descended in every part of the gulf, for a distance of two miles ; and a very heavy one began on the mountain top, immediately above the house, and descended in a direct line towards it ; the sweeping torrent, a river from the clouds, and a river full of trees...
Página 46 - We can not doubt that the animals received their existence and lived and died in an ocean full of carbonate of lime, in solution, or in mechanical suspension, or both. When they died they of course subsided to the bottom and were surrounded, as they lay, by the concreting calcareous matter; . . . the interstices were filled by the calcareous deposit, and this being more or less chemically dissolved, produced a firm, subcrystalline mass, a section of which shows the animals sawn through.
Página 69 - ... the bowels of the earth, (so often imagined by authors) appears to be no very extravagant assumption. It is true it cannot be proved, but in a sphere of eight thousand miles in diameter, it would appear in no way extraordinary, that many cavities might exist, which collectively, or even singly, might well contain much more than all our oceans, seas, and other superficial waters, none of which are probably more than a few miles in depth. If these cavities communicate in any manner with the oceans,...
Página 21 - The avalanches descended in every part of the gulf, for a distance of two miles ; and a very heavy one began on the mountain top, immediately above the house, and descended in a direct line towards it ; the sweeping torrent, a river from the clouds, and a river full of trees, earth, stones and rocks, rushed to the house and...