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abundant acid afford animals appears argillaceous augite basalt basin beds beneath blow-pipe bones calcareous Cambrian carbonate of lime carboniferous limestone chalk characters chlorite clay coal field coal measures coast colour conglomerates consists containing crag cretaceous crystalline crystals deposits detritus dikes diluvial district earth elevation England epoch estuary exhibit existing extends extinct feet felspar formation fossiliferous fossils fracture fragments freshwater genera geological geologists gneiss granite gravel greenstone grit heat Hills hornblende igneous iron island land lava London clay lower lustre Lyell mammalia marine shells marls masses metallic mica miles millstone grit mineral Murchison northern occur old red sandstone oolitic organic remains oxide oxygen pliocene poikilitic porphyry portion potassa precipitate produced quartz rivers sand schist shale siliceous Silurian slate soda sometimes species specific gravity stone strata structure substances sulphate sulphur sulphuret surface tertiary strata thickness upper veins volcanic Wales wealden
Seite 41 - I do not now maintain, I think it right, as one of my last acts before I quit this Chair, thus publicly to read my recantation. We ought, indeed, to have paused before we first adopted the diluvian theory, and referred all our old superficial gravel to the action of the Mosaic flood.
Seite 141 - GEOLOGY is the science which investigates the successive changes that have taken place in the organic and inorganic kingdoms of nature ; it enquires into the causes of these changes, and the influence which they have exerted in modifying the surface and external structure of our planet.
Seite 1 - geology, in the magnitude and sublimity of the objects of which it treats, undoubtedly ranks, in the scale of the sciences, next to astronomy...
Seite 335 - Wash, that great triangular area commences which extends over the eastern and southern counties, bounded on the east and south by the sea, and on the west by a line drawn from Hunstanton Cliffs, in Norfolk, to Abbotsbury, on the coast of Dorsetshire.
Seite 38 - After all, it should be recollected,' says Dr. Buckland, ' that the question is not respecting the correctness of the Mosaic narrative, but of our interpretation of it; and still further, it should be borne in mind that the object of this account was, not to state in what manner, but by whom, the world was made.
Seite 42 - We ought, indeed, to have paused, before we first adopted the diluvial theory, and referred all our old superficial gravel to the action of the Mosaic flood. For of man, and the works of his hands, we have not yet found a single trace among the remnants of a former world entombed in these ancient deposits.
Seite 91 - Weigh the denser body and the compound mass, separately, both in water and out of it ; then find how much each loses in water, by subtracting its weight in water from its weight in air ; and subtract the less of these remainders from the greater. Then say, As the last remainder, Is to the weight of the light body in air, So is the specific gravity of water, To the specific gravity of the body.
Seite 303 - In external form these animals somewhat resemble our modern bats and vampires : most of them had the nose elongated, like the snout of a crocodile, and armed with conical teeth. Their eyes were of enormous size, apparently enabling them to fly by night. From their wings projected fingers, terminated by long hooks, like the curved claw on the thumb of the bat. These must have formed a powerful paw, wherewith the animal was enabled to creep or climb, or suspend itself from trees. It...
Seite 346 - At the voice of comparative anatomy, every bone, and fragment of a bone, resumed its place. I cannot find words to express the pleasure I experienced In seeing, as I discovered one character, how all the consequences which I predicted from it were successively confirmed...
Seite 42 - For of man, and the works of his hands, we have not yet found a single trace among the remnants of a former world entombed in these ancient deposits. In classing together distant unknown formations under one name; in giving them a simultaneous origin, and in determining their date, not by the organic remains we had discovered, but by those we expected hypothetically hereafter to discover, in them ; we have given one more example of the passion with which the mind fastens upon general conclusions,...