Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página 2
... obtained . The minerals and metals are not scattered broadcast through the earth . Were coal , copper , and iron , for example , of universal dis- semination , man would have only to dig and mine ; but each has its own place and mode of ...
... obtained . The minerals and metals are not scattered broadcast through the earth . Were coal , copper , and iron , for example , of universal dis- semination , man would have only to dig and mine ; but each has its own place and mode of ...
Página 3
... obtain this needed information save through a geological ac- quaintance with the nature of the materials he has to ... obtained and dressed , is of prime importance in architecture . The stone which will keep its colour in the open ...
... obtain this needed information save through a geological ac- quaintance with the nature of the materials he has to ... obtained and dressed , is of prime importance in architecture . The stone which will keep its colour in the open ...
Página 4
... obtained of equal quality and at a cheaper rate in his own immediate locality . It is also a want of knowledge on ... obtain information from geological maps and from professional geologists ; but , even with this aid , his work will be ...
... obtained of equal quality and at a cheaper rate in his own immediate locality . It is also a want of knowledge on ... obtain information from geological maps and from professional geologists ; but , even with this aid , his work will be ...
Página 6
... obtained . The study of any recent text - book , the power to read aright geological maps and sections , and a knowledge of the composi- tion of the peculiar products he has to deal with , are about all he requires for the prosecution ...
... obtained . The study of any recent text - book , the power to read aright geological maps and sections , and a knowledge of the composi- tion of the peculiar products he has to deal with , are about all he requires for the prosecution ...
Página 19
... obtained from the coal formation , and is so called from its power of resisting the strongest action of heat - a property it acquires from its freedom from alkaline earths , such as soda , potash , and lime . Fullers ' Clay or Earth is ...
... obtained from the coal formation , and is so called from its power of resisting the strongest action of heat - a property it acquires from its freedom from alkaline earths , such as soda , potash , and lime . Fullers ' Clay or Earth is ...
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
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