The Subterranean WorldLongmans, Green, and Company, 1871 - 522 páginas |
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Página xii
... COPPER . Its valuable Qualities - English Copper Mines - Their comparatively recent Importance - Dreary Aspect of the Cornwall Copper Country - Botallack — Sub- marine Copper Mines - A Blind Miner - Swansea - Smelting Process - The ...
... COPPER . Its valuable Qualities - English Copper Mines - Their comparatively recent Importance - Dreary Aspect of the Cornwall Copper Country - Botallack — Sub- marine Copper Mines - A Blind Miner - Swansea - Smelting Process - The ...
Página 15
... copper slate , of Thuringia . From the curved form of their impressions , as if they had been spasmodically contracted , the fossil fish of the latter locality are supposed to have perished by a sudden death before they sank down into ...
... copper slate , of Thuringia . From the curved form of their impressions , as if they had been spasmodically contracted , the fossil fish of the latter locality are supposed to have perished by a sudden death before they sank down into ...
Página 224
... copper . An active commercial intercourse must have existed between the Ohio mound- builders and the natives of distant regions , as mica from the Alleghanies , sea - shells from the Gulf of Mexico , obsidian from the Mexican mountains ...
... copper . An active commercial intercourse must have existed between the Ohio mound- builders and the natives of distant regions , as mica from the Alleghanies , sea - shells from the Gulf of Mexico , obsidian from the Mexican mountains ...
Página 258
... copper , which , after the charge has been introduced , is inserted to reach the bottom of the hole , which is now ready for tamping . For this purpose , any soft species of rock free from flinty particles , which might provoke a ...
... copper , which , after the charge has been introduced , is inserted to reach the bottom of the hole , which is now ready for tamping . For this purpose , any soft species of rock free from flinty particles , which might provoke a ...
Página 271
... copper mines open almost at the sea level , an enormous influx of water can be kept in check only by an equally enormous steam - power . In the United and Consolidated Mines between Truro and Red- ruth , seven steam - pumps , working ...
... copper mines open almost at the sea level , an enormous influx of water can be kept in check only by an equally enormous steam - power . In the United and Consolidated Mines between Truro and Red- ruth , seven steam - pumps , working ...
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Términos y frases comunes
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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