Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página ii
... WEALTH ; BUT IT REQUIRES KNOWLEDGE WHERE TO SEARCH , AND SKILL HOW TO SECURE IT . " " THERE IS NOTHING SUPERFLUOUS IN NATURE ; NOTHING USELESS , IF MAN ONLY KNEW HOW TO TURN IT TO HIS ADVANTAGE . " " 1 H ; BUT IT REQUIRES SECURE IT .
... WEALTH ; BUT IT REQUIRES KNOWLEDGE WHERE TO SEARCH , AND SKILL HOW TO SECURE IT . " " THERE IS NOTHING SUPERFLUOUS IN NATURE ; NOTHING USELESS , IF MAN ONLY KNEW HOW TO TURN IT TO HIS ADVANTAGE . " " 1 H ; BUT IT REQUIRES SECURE IT .
Página vii
... knowledge of these substances their nature , geolo- gical position , and abundance - cannot fail to be of use to those who have to deal with them ; and some acquaintance with them , in a general way , can as little fail to be of inter ...
... knowledge of these substances their nature , geolo- gical position , and abundance - cannot fail to be of use to those who have to deal with them ; and some acquaintance with them , in a general way , can as little fail to be of inter ...
Página viii
... knowledge and other lines of research than those that fall within the scope of the geologist . Where necessary , however , for the elucidation of the subject , the nature of these processes and appliances has been briefly indicated ...
... knowledge and other lines of research than those that fall within the scope of the geologist . Where necessary , however , for the elucidation of the subject , the nature of these processes and appliances has been briefly indicated ...
Página 1
... knowledge of the position and sequence of rock - formations , the more certain our economic explorations become ; and the more successful our industrial adventures , the greater will be the impetus given to the extension and exactitude ...
... knowledge of the position and sequence of rock - formations , the more certain our economic explorations become ; and the more successful our industrial adventures , the greater will be the impetus given to the extension and exactitude ...
Página 2
... knowledge of the composition and structure of the earth becomes more and more indispensable ; hence an acquaintance with Geology , if he would learn where this or that mineral is to be found , the abundance in which it occurs , and the ...
... knowledge of the composition and structure of the earth becomes more and more indispensable ; hence an acquaintance with Geology , if he would learn where this or that mineral is to be found , the abundance in which it occurs , and the ...
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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
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