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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النتائج 1-5 من 80
الصفحة
... hundred years standing -Of the antiquity of Tin , iii . Few Veftigia of Tin in Scilly- Iflands , iv . Author's opinion , that Tin was anciently exported from Falmouth harbour , fupported by Strabo , Diodorus Siculus , Cornish M. S. v ...
... hundred years standing -Of the antiquity of Tin , iii . Few Veftigia of Tin in Scilly- Iflands , iv . Author's opinion , that Tin was anciently exported from Falmouth harbour , fupported by Strabo , Diodorus Siculus , Cornish M. S. v ...
الصفحة
... hundred and fixty thoufandth part of an inch thick - It never decays , & c . 53 . Platina , a Metal lately difcovered , nearest Gold in fixednefs and folidity , but not fo ductile ; differs from all other Metals , 54 , 55. Quickfilver ...
... hundred and fixty thoufandth part of an inch thick - It never decays , & c . 53 . Platina , a Metal lately difcovered , nearest Gold in fixednefs and folidity , but not fo ductile ; differs from all other Metals , 54 , 55. Quickfilver ...
الصفحة ii
... hundred years before the coming of our Saviour ; and that their naviga- tion to it , was for the fake of our Tin . They confidered this traffick as a point of fuch confequence , that they erected forts and castles on our coafts for the ...
... hundred years before the coming of our Saviour ; and that their naviga- tion to it , was for the fake of our Tin . They confidered this traffick as a point of fuch confequence , that they erected forts and castles on our coafts for the ...
الصفحة iv
... hundreds . of Cornwall , and there fmelted into white Tin , by charcoal fires , as the want of a proper bitumen in those days , and the entire demolition of all the woods near the Tin Mines , very plainly evince . Befides , unless we ...
... hundreds . of Cornwall , and there fmelted into white Tin , by charcoal fires , as the want of a proper bitumen in those days , and the entire demolition of all the woods near the Tin Mines , very plainly evince . Befides , unless we ...
الصفحة viii
... hundred fathoms or more . It is also a fact , that most Mines with us , both of Tin and Copper , being richer in quality near the furface , and by that circumftance attended with lefs expence in the working , do for the most part reward ...
... hundred fathoms or more . It is also a fact , that most Mines with us , both of Tin and Copper , being richer in quality near the furface , and by that circumftance attended with lefs expence in the working , do for the most part reward ...
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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