Elements of Geology: Intended for the Use of StudentsG.P. Putnam, 1851 - 334 sidor |
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Sida viii
... appear , birds and mammalia , 147 ference from granite , and mode of occurrence , 159 Greenstone , constituents and color ; diorite , 160 148 Basalt , constituents , color and structure , 161 stone , Amygdaloid ; wacke or toad ...
... appear , birds and mammalia , 147 ference from granite , and mode of occurrence , 159 Greenstone , constituents and color ; diorite , 160 148 Basalt , constituents , color and structure , 161 stone , Amygdaloid ; wacke or toad ...
Sida xiii
... appear- 317 ances of comets , nebulæ and the moon , 335 CHAPTER XI . PRACTICAL GEOLOGY . 336 319 337 Iceberg theory , arguments for , and objections to , 320 In mining , the most promis- ing fields ; gold , platinum , Elevation theory ...
... appear- 317 ances of comets , nebulæ and the moon , 335 CHAPTER XI . PRACTICAL GEOLOGY . 336 319 337 Iceberg theory , arguments for , and objections to , 320 In mining , the most promis- ing fields ; gold , platinum , Elevation theory ...
Sida 3
... appears that the density increases towards the center . By the pressure exerted beneath the surface the bulk of bodies is compressed , and their density consequent- ly increased . At the depth of thirty - four miles , air would become ...
... appears that the density increases towards the center . By the pressure exerted beneath the surface the bulk of bodies is compressed , and their density consequent- ly increased . At the depth of thirty - four miles , air would become ...
Sida 46
... appear- ance of the crater in 1829. The amount of lava ejected by Vesuvius in the eruption of 1794 , exceeded twenty - two millions of cubic yards . 54. Etna has been known as an active volcano from the earliest periods of tradition ...
... appear- ance of the crater in 1829. The amount of lava ejected by Vesuvius in the eruption of 1794 , exceeded twenty - two millions of cubic yards . 54. Etna has been known as an active volcano from the earliest periods of tradition ...
Sida 65
... appears divested of its fleshy covering , and exhibits the cells within which the polyps par- tially conceal themselves . The Astrea is a very common and widely diffused species . It Fig . 33 . Meandrina without polyps . 11 ellepearee ...
... appears divested of its fleshy covering , and exhibits the cells within which the polyps par- tially conceal themselves . The Astrea is a very common and widely diffused species . It Fig . 33 . Meandrina without polyps . 11 ellepearee ...
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Elements of Geology: Intended for the Use of Students Samuel St. John Obegränsad förhandsgranskning - 1868 |
Elements of Geology: Intended for the Use of Students Samuel St. John Obegränsad förhandsgranskning - 1851 |
Elements of Geology: Intended for the Use of Students Samuel St. John Obegränsad förhandsgranskning - 1851 |
Vanliga ord och fraser
abundant agency alluvial alluvium America animals appear augite basaltic beds belong bones calcareous called carbonate of lime carboniferous chalk clay coal coast color consists contain coral crater cretaceous crust crystalline deposits dikes drift earth elevated England Eocene eruption exhibits existing extensive extinct fauna feet thick feldspar fishes fissures formations fossil fossiliferous fragments genera geologists Geology gneiss granite heat hornblende hundred feet Ichthyosaurus igneous rocks inches islands lakes lava Lias lignite limestone living marine marls masses mica mineral mountains occur ocean Old Red Old Red Sandstone Oolite organic remains oxide of iron paleozoic period phenomena plants polyps porphyry portion preserved quadrupeds quartz Red Sandstone reefs reptiles resembling river salt sand secondary shales shells silica Silurian skeletons slate soils sometimes species square miles stone strata stratified rocks structure surface Tertiary thousand feet tion trap rocks trees unstratified valley vegetable veins volcanic Wealden
Populära avsnitt
Sida 294 - These are the generations of the heavens and of the earth when they were created in the day that the LORD God made the earth and the heavens...
Sida 166 - ... now unknown upon the surface of the earth, presented to his senses almost in the beauty and vigour of their primeval life ; their scaly stems, and bending branches, with their delicate apparatus of foliage, are all spread forth before him, little impaired by the lapse of countless ages, and bearing faithful records of extinct systems of vegetation, which began and terminated in times of which these relics are the infallible historians.
Sida 289 - Shall it any longer then be said, that a science, which unfolds such abundant evidence of the Being and Attributes of God, can reasonably be viewed in any other light than as the efficient Auxiliary and Handmaid of Religion ? Some few there still may be, whom timidity or prejudice or want of opportunity allow not to examine its evidence ; who are alarmed by the novelty, or surprised by the extent and magnitude of the views which Geology forces on their attention, and who would rather have kept closed...
Sida 221 - ... the Phlegraean fields of Italy or Sicily which displays in greater perfection the peculiar features of a country desolated by volcanic phenomena. It is true that the cones thrown up around are partially wooded and in general covered with herbage ; but the sides of some are still naked ; and the interior of their broken craters rugged, black, and scorified, as well as the rocky floods of lava with which they have loaded the plain, have a freshness of aspect such as the products of fire alone could...
Sida 165 - The most elaborate imitations of living foliage on the painted ceilings of Italian palaces bear no comparison with the beauteous profusion of extinct vegetable forms with which the galleries of these instructive coal mines are overhung. The roof is covered as with a canopy of gorgeous tapestry, enriched with festoons of most graceful foliage flung in wild irregular profusion over every portion of its surface.
Sida 166 - The effect is heightened by the contrast of the coal-black colour of these vegetables, with the light ground-work of the rock to which they are attached. The spectator feels himself transported, as if by enchantment, into the forests of another world ; he beholds Trees, of forms and characters now unknown upon the surface of the earth, presented to his senses almost in the beauty and vigour of their primeval life...
Sida i - geology, in the magnitude and sublimity of the objects of which it treats, undoubtedly ranks, in the scale of the sciences, next to astronomy...
Sida 36 - ... the quantity of heat discharged over the Atlantic from "the waters of the Gulf Stream in a winter's day would be sufficient to raise the whole column of atmosphere that rests upon France and the British Islands from the freezing point to summer heat.