The Subterranean WorldLongmans, Green, and Company, 1871 - 522 páginas |
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Página 41
... aque- ducts across the intermediate valley ; but the Turks , whom we look upon as ignorant barbarians , obtain the same result in a much more economical manner , and in this respect far surpass the ancients , who , had they been better.
... aque- ducts across the intermediate valley ; but the Turks , whom we look upon as ignorant barbarians , obtain the same result in a much more economical manner , and in this respect far surpass the ancients , who , had they been better.
Página 48
... obtained by perforating the soil to a certain depth in places where no indication of springs existed at the surface . The barbarous inhabitants of the Sahara seem , however , to have long preceded the Artesians in the art of sinking ...
... obtained by perforating the soil to a certain depth in places where no indication of springs existed at the surface . The barbarous inhabitants of the Sahara seem , however , to have long preceded the Artesians in the art of sinking ...
Página 50
... obtained from the rain collected in cisterns . Hence the joy of the inhabitants may be imagined , when , in 1846 , an Arte- sian boring in the Piazza San Paolo began to disgorge its water at the rate of forty gallons per minute , and ...
... obtained from the rain collected in cisterns . Hence the joy of the inhabitants may be imagined , when , in 1846 , an Arte- sian boring in the Piazza San Paolo began to disgorge its water at the rate of forty gallons per minute , and ...
Página 74
... obtain a supply of water for their herds during the summer , they cover some snow a few inches deep with volcanic sand , which entirely prevents the penetration of solar heat . Most of the recent lava - streams evolve from all their fis ...
... obtain a supply of water for their herds during the summer , they cover some snow a few inches deep with volcanic sand , which entirely prevents the penetration of solar heat . Most of the recent lava - streams evolve from all their fis ...
Página 80
... obtained , and another cycle of similar changes is renewed . The important part which water plays in volcanic action is moreover sufficiently proved by the enormous quantity of steam which is poured forth during every eruption , or is ...
... obtained , and another cycle of similar changes is renewed . The important part which water plays in volcanic action is moreover sufficiently proved by the enormous quantity of steam which is poured forth during every eruption , or is ...
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Alston Moor amber Ammonites ancient animals Baku beautiful beds bones bottom carats carbonic acid Carboniferous Carniola cave cavern century chiefly coal coal-fields coast colliery colour considerable copper Cornwall crater Crown 8vo deep deposits depth descending diamond discovered discovery distance earth earthquake Edition England enormous entrance eruption excavations extend extinct fathoms feet fire forests fossil frequently furnaces galleries gold grotto Guanaxuato height Herculaneum History hundred Ichthyosaurus inhabitants iron island labour lake land lava less likewise limestone masses metal miles mineral mines mountain MUD VOLCANOES nature neighbourhood Post 8vo produce quantity quarries remarkable rich rise river rock roof ruins scoriæ shaft silver Sir Charles Lyell situated solfataras stalactites stalagmite Stalita stone strata stream subterranean sulphur surface thick thousand tion tons town valley vapours vast vaults vegetation volcano vols walls whole wonderful Woodcuts workmen
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