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 90
الصفحة
... depth of a Fiffure , unlimited , 79. The direction of Tin and Copper Lodes in Cornwall always eaft and weft , 80 . Their deflexion , inclination , or underlie , north or fouth , 80 . Of horizontal Lodes or Fiffures , called Flat - Lodes ...
... depth of a Fiffure , unlimited , 79. The direction of Tin and Copper Lodes in Cornwall always eaft and weft , 80 . Their deflexion , inclination , or underlie , north or fouth , 80 . Of horizontal Lodes or Fiffures , called Flat - Lodes ...
الصفحة
... depth - Why Lodes in general are not rich near the surface , 87. Twelve general different kinds of Tin and Copper Lodes Goffan Lodes moft common - described - a tender red , a tender brown , 88. A dry pale Goffan , a poor Tin Goffan ...
... depth - Why Lodes in general are not rich near the surface , 87. Twelve general different kinds of Tin and Copper Lodes Goffan Lodes moft common - described - a tender red , a tender brown , 88. A dry pale Goffan , a poor Tin Goffan ...
الصفحة
... depth , water found by the rod - Inftances of Lodes found by it , 123. Of Cofteaning and Shoding -Shode Stones ... depths , and thickneffes of Stream Tin Strata , 132. Of the level , the overburden , and discharging the water by hand or ...
... depth , water found by the rod - Inftances of Lodes found by it , 123. Of Cofteaning and Shoding -Shode Stones ... depths , and thickneffes of Stream Tin Strata , 132. Of the level , the overburden , and discharging the water by hand or ...
الصفحة viii
... depth , to an hundred fathoms or more . It is also a fact , that most Mines with us , both of Tin and Copper , being ... depth may prove unfavourable for fome time after ; for it is experimentally true , that moft Mines of confiderable ...
... depth , to an hundred fathoms or more . It is also a fact , that most Mines with us , both of Tin and Copper , being ... depth may prove unfavourable for fome time after ; for it is experimentally true , that moft Mines of confiderable ...
الصفحة 9
... depth , with eight thousand pounds charge upon her , and still within forty fathoms of a gulph of Copper Ore in the fame Lode . This hypothefis , which is formed on my own obfervation and judgment of Metals , may not be relished by ...
... depth , with eight thousand pounds charge upon her , and still within forty fathoms of a gulph of Copper Ore in the fame Lode . This hypothefis , which is formed on my own obfervation and judgment of Metals , may not be relished by ...
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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