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
... Five forts of Moorftone , 75 . Ireftone , the hardest of all Strata , rich Lodes of Copper in it , 76. On the formation of Fiffures in general , 76. their various ufes in nature , 77. The opinions of Woodward and Agricola controverted ...
... Five forts of Moorftone , 75 . Ireftone , the hardest of all Strata , rich Lodes of Copper in it , 76. On the formation of Fiffures in general , 76. their various ufes in nature , 77. The opinions of Woodward and Agricola controverted ...
الصفحة ix
... five hundred pounds , including the land owner's fhare , which is generally a fixth , feventh , or eighth part , in fpecie , of the whole proceeds . d From From a comparative view of the charges in working of INTRODUCTION . ix draulicks ...
... five hundred pounds , including the land owner's fhare , which is generally a fixth , feventh , or eighth part , in fpecie , of the whole proceeds . d From From a comparative view of the charges in working of INTRODUCTION . ix draulicks ...
الصفحة xi
... five hundred pounds , which must have been yearly forty - feven thousand three hundred and fifty pounds . From 1736 inclufive to the end of 1745 , feventy - five thousand five hundred and twenty tons of Copper Ore were fold at feven ...
... five hundred pounds , which must have been yearly forty - feven thousand three hundred and fifty pounds . From 1736 inclufive to the end of 1745 , feventy - five thousand five hundred and twenty tons of Copper Ore were fold at feven ...
الصفحة xii
... five pounds , and one hundred and twenty - four thoufand three hun- dred and four pounds yearly . Lastly , from 1766 to the end of the last year , two hundred and fixty - four thousand two hundred and feventy - three tons of Copper Ore ...
... five pounds , and one hundred and twenty - four thoufand three hun- dred and four pounds yearly . Lastly , from 1766 to the end of the last year , two hundred and fixty - four thousand two hundred and feventy - three tons of Copper Ore ...
الصفحة xiii
... five cent . and the grofs gain to only twenty thousand pounds annum . This , however , makes fome profit appear ; but how small , if true ! how inadequate to the fum laid out and expended ! This fhews the infatuation , and delufive ...
... five cent . and the grofs gain to only twenty thousand pounds annum . This , however , makes fome profit appear ; but how small , if true ! how inadequate to the fum laid out and expended ! This fhews the infatuation , and delufive ...
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طبعات أخرى - عرض جميع المقتطفات
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