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 12
... case : but let it be remembered , that where the nidus with the decom- pofing matter is taken away , the Water from the circumjacent ftrata , instead of percolating through the vein , falls into a con- gregated fluid of its own kind ...
... case : but let it be remembered , that where the nidus with the decom- pofing matter is taken away , the Water from the circumjacent ftrata , instead of percolating through the vein , falls into a con- gregated fluid of its own kind ...
الصفحة 20
... our knowledge of the preffure and gravity of fluids : but before we proceed , we beg leave to illuftrate our fubject , by a very remarkable hiftory of a case in point . The The Mine of Huel - Cock in the parish of 20 OF WATER , THE CEMENT.
... our knowledge of the preffure and gravity of fluids : but before we proceed , we beg leave to illuftrate our fubject , by a very remarkable hiftory of a case in point . The The Mine of Huel - Cock in the parish of 20 OF WATER , THE CEMENT.
الصفحة 22
... case , it penetrates through the furface , and finds a quiet depofitory , in the fmall clefts and interfstices of the ftrata , below the force and action of the fea ; and in time , probably , in- cruftates and fills up thofe very minute ...
... case , it penetrates through the furface , and finds a quiet depofitory , in the fmall clefts and interfstices of the ftrata , below the force and action of the fea ; and in time , probably , in- cruftates and fills up thofe very minute ...
الصفحة 97
... case the Miners expect to meet with what they call a Horse : but unless they come down in finking upon the back or top of it , they feldom call it by that name ; and when met with in ftopeing , or driving as aforefaid , they commonly ...
... case the Miners expect to meet with what they call a Horse : but unless they come down in finking upon the back or top of it , they feldom call it by that name ; and when met with in ftopeing , or driving as aforefaid , they commonly ...
الصفحة 108
... cases they find the Lode again by finking a shaft from grafs , which answers a double intention ; for a shaft must be had , whenever the Lode is cut by any other method , in order to work the fame effectually in the Pink , however , if ...
... cases they find the Lode again by finking a shaft from grafs , which answers a double intention ; for a shaft must be had , whenever the Lode is cut by any other method , in order to work the fame effectually in the Pink , however , if ...
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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