The Encyclopaedia Britannica: A Dictionary of Arts, Sciences and General Literature, 10. köideA. et C. Black, 1879 - 856 pages |
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Page 56
... beds of mica slate , containing hornblende and granulâr mica covered by thick beds of pyritous greenstone . On the south and east are granite and syenite , which runs under the sandstone conglomerate towards Oughterard , and this again ...
... beds of mica slate , containing hornblende and granulâr mica covered by thick beds of pyritous greenstone . On the south and east are granite and syenite , which runs under the sandstone conglomerate towards Oughterard , and this again ...
Page 68
... bed , which alter the face of the country . Extensive islands are thrown up , and attach themselves to the mainland , while the river deserts its old bed and seeks a new channel , it may be many miles Such changes are so rapid and on so ...
... bed , which alter the face of the country . Extensive islands are thrown up , and attach themselves to the mainland , while the river deserts its old bed and seeks a new channel , it may be many miles Such changes are so rapid and on so ...
Page 88
... beds of rock - salt at a depth of 1500 or 1600 feet : being brought to the surface , it is conveyed in bamboo tubes and used for lighting as well as for evaporating brine ; and it is asserted that the Chinese used this naturally evolved ...
... beds of rock - salt at a depth of 1500 or 1600 feet : being brought to the surface , it is conveyed in bamboo tubes and used for lighting as well as for evaporating brine ; and it is asserted that the Chinese used this naturally evolved ...
Page 213
... beds or strata on the floor of the sea , that others have been built up by the slow aggregation of organic forms , that others have been poured out in a molten condition or in showers of loose dust from subterranean sources . We further ...
... beds or strata on the floor of the sea , that others have been built up by the slow aggregation of organic forms , that others have been poured out in a molten condition or in showers of loose dust from subterranean sources . We further ...
Page 228
... beds often associated with metamorphosed limestones . Chlorite is a general term including several minerals which agree in possessing a greenish colour , soapy feel , hardness of only 2 to 2.5 , and specific gravity of 2.65 to 2.85 . It ...
... beds often associated with metamorphosed limestones . Chlorite is a general term including several minerals which agree in possessing a greenish colour , soapy feel , hardness of only 2 to 2.5 , and specific gravity of 2.65 to 2.85 . It ...
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abundant acid ancient angle appear augite axis basalt beds carbonic carbonic acid centre century character chemical coal coast cone consists contains crust crystalline crystals deposit distance district earth equator eruption existence feet felspar formations fossils Gaelic Galatia gallic acid galls galvanometer Gaur gelatin gems geological globe gneiss granite Greek heat hornblende igneous igneous rocks important iron islands known lake land latitude lava less lime limestone longitude mass materials matter meridian metamorphic miles mineral mountain observed obtained occur ocean organic original orthoclase parallel Paris passing period plane porphyritic portion present pressure produced quartz regions remains rise river rocks Roman round sand sandstone schists Scotland sediment shales side siliceous Silurian sometimes species specific gravity square miles stones strata stream structure substance surface temperature thick tion town traced upper vapour vertical volcanic voyage whole