Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
No interior do livro
Resultados 1-5 de 42
Página 43
... tons . It has been calculated that 5,600,000 cubic feet of sand , chiefly composed of comminuted sea - shells , are annually taken from the coasts of Cornwall and Devon , and spread over the land in the interior as a mineral manure . It ...
... tons . It has been calculated that 5,600,000 cubic feet of sand , chiefly composed of comminuted sea - shells , are annually taken from the coasts of Cornwall and Devon , and spread over the land in the interior as a mineral manure . It ...
Página 45
... tons , value £ 50,000 . Similar deposits of a much more extensive nature occur in the Tertiary formations of the Caro- linas , New Jersey , and Georgia , and are largely used in the United States of America , as well as imported into ...
... tons , value £ 50,000 . Similar deposits of a much more extensive nature occur in the Tertiary formations of the Caro- linas , New Jersey , and Georgia , and are largely used in the United States of America , as well as imported into ...
Página 46
... tons , valued at sixty - four millions sterling ; but this rate of importation cannot long continue - for , according to the estimate of the British Consul at Callao in 1873 , the whole of the exportable guano which Peru then possessed ...
... tons , valued at sixty - four millions sterling ; but this rate of importation cannot long continue - for , according to the estimate of the British Consul at Callao in 1873 , the whole of the exportable guano which Peru then possessed ...
Página 48
... tons per annum . We have said nothing of artificial manures , whose name is legion , but restricted our notice chiefly to manurial substances which occur native in the crust of the earth . No doubt these substances enter largely into ...
... tons per annum . We have said nothing of artificial manures , whose name is legion , but restricted our notice chiefly to manurial substances which occur native in the crust of the earth . No doubt these substances enter largely into ...
Página 77
... tons of stone ; and notwithstanding the greater competition with the Bath oolites , the demand , we believe , still continues . Throughout the whole zone of these Oolites , which stretches , in varying breadth , from Dorset to ...
... tons of stone ; and notwithstanding the greater competition with the Bath oolites , the demand , we believe , still continues . Throughout the whole zone of these Oolites , which stretches , in varying breadth , from Dorset to ...
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