Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página viii
... importance ; but while not professing to notice every detail in Applied Geology , the author has endeavoured to present an intelligible outline of the subject , by grouping , under distinct heads , the various arts and manufactures in ...
... importance ; but while not professing to notice every detail in Applied Geology , the author has endeavoured to present an intelligible outline of the subject , by grouping , under distinct heads , the various arts and manufactures in ...
Página ix
... Importance . Acquisition of Geological Facts and Principles . II . THE ROCKY CRUST , 1. ITS STRUCTURE AND COMPOSITION , Stratified and Unstratified Rocks . Relative Positions of Rocks . Structure and Texture of Rocks . Hardness and ...
... Importance . Acquisition of Geological Facts and Principles . II . THE ROCKY CRUST , 1. ITS STRUCTURE AND COMPOSITION , Stratified and Unstratified Rocks . Relative Positions of Rocks . Structure and Texture of Rocks . Hardness and ...
Página 2
... importance . Man cannot make progress in civilisation without drawing from the mineral and metallic stores of the earth's crust . He may lead a savage or a nomadic life , and subsist on roots and fruits , by hunting , by fishing , or on ...
... importance . Man cannot make progress in civilisation without drawing from the mineral and metallic stores of the earth's crust . He may lead a savage or a nomadic life , and subsist on roots and fruits , by hunting , by fishing , or on ...
Página 3
... importance in architecture . The stone which will keep its colour in the open country may not do so in the smoky city ; and the rock which will resist the action of the weather in its normal state may waste and crumble INTRODUCTION . 3.
... importance in architecture . The stone which will keep its colour in the open country may not do so in the smoky city ; and the rock which will resist the action of the weather in its normal state may waste and crumble INTRODUCTION . 3.
Página 4
... important information to the manufac- turer - indicating the nature and abundance of the limestones , and sands , and gravels with which he has to operate . It is ignorance on this point which often causes the builder to bring from a ...
... important information to the manufac- turer - indicating the nature and abundance of the limestones , and sands , and gravels with which he has to operate . It is ignorance on this point which often causes the builder to bring from a ...
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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