Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página viii
... practical geologist has to deal , com- paratively little notice has been taken of the processes by which these are converted into the useful and ornamental . Such processes belong to technology , and come within the domain of the ...
... practical geologist has to deal , com- paratively little notice has been taken of the processes by which these are converted into the useful and ornamental . Such processes belong to technology , and come within the domain of the ...
Página 1
... practical , and appealing to the industrial necessities of life . In its scientific aim it examines , maps out , and arranges the rocks of the earth's crust into formations and life - systems according to their composition , relative ...
... practical , and appealing to the industrial necessities of life . In its scientific aim it examines , maps out , and arranges the rocks of the earth's crust into formations and life - systems according to their composition , relative ...
Página 2
... practical value , and will ever be so , so long as man has to draw from the earth the ma- terials for the fabrication of his tools and machinery , for his heating and lighting , and for the construction of his dwellings and their ...
... practical value , and will ever be so , so long as man has to draw from the earth the ma- terials for the fabrication of his tools and machinery , for his heating and lighting , and for the construction of his dwellings and their ...
Página 4
... practical skill of the miner in dealing with successions of beds , with dykes and dislocations , and with kindred phenomena , is geology of a kind , requiring the noting of facts and the drawing of generalisations , not less real and ...
... practical skill of the miner in dealing with successions of beds , with dykes and dislocations , and with kindred phenomena , is geology of a kind , requiring the noting of facts and the drawing of generalisations , not less real and ...
Página 5
... be of advantage to those who have to fashion and fabricate them into objects whether of utility or ornament . It is not required of practical men to go deeply into the ļ theories of geology , for that is impossible , INTRODUCTION . པ་
... be of advantage to those who have to fashion and fabricate them into objects whether of utility or ornament . It is not required of practical men to go deeply into the ļ theories of geology , for that is impossible , INTRODUCTION . པ་
Outras edições - Ver tudo
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
abundant admixture agricultural alumina amount antimony arsenic artificial arts and manufactures basalts beds bismuth bituminous blocks borax Britain calcareous carbonate carbonic acid Carboniferous cements chalk chemical chiefly chloride clay coal colour compact composition consists containing copper crust crystalline crystals deposits Derbyshire districts durable earth employed engineer extensively felspar fire-clay formations gems geologist Geology gold granites greenstones grits gypsum hard heat hence hydraulic ingredients iron ironstones known lignites lime limestones lustre magnesia manganese manures marbles masses material metamorphic mineral and metallic mortar nature obtained occasionally occur Oolite ornamental oxide peat pigments polishing 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 springs stones strata stratified structure substances sulphate sulphide sulphuric acid surface tertiary texture thickness tints tion tons usually varieties various vary veins volcanic yellow yield zinc