Mineralogia Cornubiensis: A Treatise on Minerals, Mines, and Mining: Containing the Theory and Natural History of Strata, Fissures, and Lodes, with the Methods of Discovering and Working of Tin, Copper, and Lead Mines, and of Cleansing and Metalizing Their Products; Shewing Each Particular Process for Dressing, Assaying and Smelting of Ores. To which is Added, an Explanation of the Terms and Idioms of MinersD. Bradford Barton Limited, 1778 - 331 من الصفحات |
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الصفحة
... quantity each year , price ton , average , and amount in fterling value . BOOK I IM CHAP . I. The Origin and Formation of Metals and Minerals . MPERVIOUS caufes of Metals , & c . fpeculative , Page I. The wildom of the creation both ...
... quantity each year , price ton , average , and amount in fterling value . BOOK I IM CHAP . I. The Origin and Formation of Metals and Minerals . MPERVIOUS caufes of Metals , & c . fpeculative , Page I. The wildom of the creation both ...
الصفحة
... quantity of Lode annually broken - Above 2,000,000 tons of Lode and Strata broken yearly , 185 , 186. Setting a Mine upon Tribute - First , of a Tin Mine - Of dividing , redividing , and cafting lots upon Doles , either in Waftrel or ...
... quantity of Lode annually broken - Above 2,000,000 tons of Lode and Strata broken yearly , 185 , 186. Setting a Mine upon Tribute - First , of a Tin Mine - Of dividing , redividing , and cafting lots upon Doles , either in Waftrel or ...
الصفحة
... quantity , by preci- pitations from folutions in aqua fortis , 256. Of proof aqua fortis , 257. How to affay Tin for Gold , 258. This process elucidated - Method to try the first fcoria for Silver - explained , 259. The fame procefs ...
... quantity , by preci- pitations from folutions in aqua fortis , 256. Of proof aqua fortis , 257. How to affay Tin for Gold , 258. This process elucidated - Method to try the first fcoria for Silver - explained , 259. The fame procefs ...
الصفحة vii
... quantity , quality , and employment . Former times might have been equally celebrated for our production of this Metal with that of Tin , had its proximity to the furface been fo great : but this rich and ufeful Metal is placed by ...
... quantity , quality , and employment . Former times might have been equally celebrated for our production of this Metal with that of Tin , had its proximity to the furface been fo great : but this rich and ufeful Metal is placed by ...
الصفحة ix
... quantity , certainty , and steadi- nefs , make complete and fubftantial amends for the great labour , and perfevering affiduity of their proprietors . In fupport of which I may venture to affirm , that fix Mines produce fix parts in ...
... quantity , certainty , and steadi- nefs , make complete and fubftantial amends for the great labour , and perfevering affiduity of their proprietors . In fupport of which I may venture to affirm , that fix Mines produce fix parts in ...
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عبارات ومصطلحات مألوفة
Adit adventurers affay alfo almoſt alſo anſwer Antimony Aqua Fortis becauſe beſt black Tin bottom buddle cafe calcination called caufe cauſe colour confequence confiderable Copper Cornwall courſe Cryſtal depth diffolved diſcovered diſcovery diſtance dreffing earth eaſily expence facks faid falts fame fathoms feet feldom feparated feven feveral fhall fhillings fhould fhovel fide Fiffures fink fire firft firſt fituation fize fmall folid fome fometimes foon fouth fteam ftrata ftratum fubject fuch fufficient funk fuppofe furface Goffan Gold ground hundred inches inftance Iron itſelf laft lefs leſs likewife Lode meaſure Metal metallick Mineral Mines moft moſt muft Mundick muſt neceffary obferved occafion particles perfons petrifactive pounds prefent purpoſe quantity raiſed reaſon Redruth refpect rich Semi-metals ſeparate Shaft ſhall Shode Silver ſmall ſome ſtate Stones thefe themſelves theſe thofe thoſe thouſand Tin-ftuff Tinners tons underlie uſed vein waſhed weft white Tin Whym