Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página viii
... ornamental . Such processes belong to technology , and come within the domain of the chemist , the metallurgist , and fabricator , requir- ing other knowledge and other lines of research than those that fall within the scope of the ...
... ornamental . Such processes belong to technology , and come within the domain of the chemist , the metallurgist , and fabricator , requir- ing other knowledge and other lines of research than those that fall within the scope of the ...
Página 22
... ornamental stone . ( Igneous or Pyrogenous Rocks . ) Granite and Syenite . - Ordinary granite is a granular - crystalline com- pound of quartz , felspar , and mica , and variously coloured from the presence of iron in the felspar , or ...
... ornamental stone . ( Igneous or Pyrogenous Rocks . ) Granite and Syenite . - Ordinary granite is a granular - crystalline com- pound of quartz , felspar , and mica , and variously coloured from the presence of iron in the felspar , or ...
Página 58
... ornamental fretwork of a cathedral church . Besides , the stone that will endure under a dry and equable climate may waste and weather away under a humid one ; while that which will retain its colour and fresh- ness in the air of the ...
... ornamental fretwork of a cathedral church . Besides , the stone that will endure under a dry and equable climate may waste and weather away under a humid one ; while that which will retain its colour and fresh- ness in the air of the ...
Página 63
... ornamental objects . Beautiful vases of large size ( Museum of Economic Geology ) are occasionally fashioned from the dark - coloured porphyries of Norway . Those found in the British Islands belong to the following two main varieties ...
... ornamental objects . Beautiful vases of large size ( Museum of Economic Geology ) are occasionally fashioned from the dark - coloured porphyries of Norway . Those found in the British Islands belong to the following two main varieties ...
Página 74
... ornamental marbles ( to be noticed under another section ) ; the great bulk of them are quarried for the blast - furnace , for mor- tars , cements , agriculture , road - making , bleaching , tanning , gas purification , and other ...
... ornamental marbles ( to be noticed under another section ) ; the great bulk of them are quarried for the blast - furnace , for mor- tars , cements , agriculture , road - making , bleaching , tanning , gas purification , and other ...
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Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Palavras e frases frequentes
abundance admixture agricultural alumina amount antimony arsenic arts and manufactures basalts beds bismuth bituminous blocks Britain calcareous carbonate carbonic acid Carboniferous cements chalk chemical chiefly chloride clay clayey coal colour compact composition consists containing copper crust crystalline crystals deposits districts durable earth employed engineer felspar fire-clays formations geologist Geology gold granites gravels Greensand greenstones grits gypsum hard heat hence hornblende igneous ingredients iron ironstones known largely lignites lime limestones lustre magnesia manganese manures marbles marls masses material metamorphic mineral and metallic mortar nature obtained occasionally occur Oolite ornamental oxide peat phosphate pigments polish porphyries potash preparation purposes pyrites quarries quartz require rocks saline salts sand sandstones schists serpentines shales silica Silurian silver soda sodium soft soils specific gravity stones strata stratified structure subsoils substances sulphate sulphide sulphuric acid surface tellurium tertiary texture thickness tion tons usually varieties various vary veins volcanic yield zinc