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
... The Stamping - Mill , & c . VI . Furnaces for Affaying , Smelting , & c . VII . A Map and Plan of North - Downs Mine The Ticketing Offers for Copper Ores 172 232 280 137 288 PRE FAC E. TH HE practical part of the following.
... The Stamping - Mill , & c . VI . Furnaces for Affaying , Smelting , & c . VII . A Map and Plan of North - Downs Mine The Ticketing Offers for Copper Ores 172 232 280 137 288 PRE FAC E. TH HE practical part of the following.
الصفحة
... Furnace . T HE effects of a deluge most apparent in Stream Tin works , 131. Of taking the Set or Grant - Sinking the Hatch or Shaft - Various breadths , depths , and thickneffes of Stream Tin Strata , 132. Of the level , the overburden ...
... Furnace . T HE effects of a deluge most apparent in Stream Tin works , 131. Of taking the Set or Grant - Sinking the Hatch or Shaft - Various breadths , depths , and thickneffes of Stream Tin Strata , 132. Of the level , the overburden ...
الصفحة
... furnace for aflaying and testing , 249 . How to discover the contents of a Mineral To affay Pyrites , 251. Method of Intention of this in the liquid way , by a menftruum , 250 . Marcafites , or Mundicks , for Gold or Silver , fcorifying ...
... furnace for aflaying and testing , 249 . How to discover the contents of a Mineral To affay Pyrites , 251. Method of Intention of this in the liquid way , by a menftruum , 250 . Marcafites , or Mundicks , for Gold or Silver , fcorifying ...
الصفحة
... furnaces , 273 , 274. Procefs of calcining , 274. Of the operation furnace , and repeated fmeltings therein , 274. Of the Metal calciner , and the operation there Of the Metal furnace , and the operation there of roafting - Of the ...
... furnaces , 273 , 274. Procefs of calcining , 274. Of the operation furnace , and repeated fmeltings therein , 274. Of the Metal calciner , and the operation there Of the Metal furnace , and the operation there of roafting - Of the ...
الصفحة ix
... furnace . The former from the fmallness of its particles , and extreme hardness of the ftone in which it is frequently found , requires to be triturated or pulverized as fmall as the fineft fand , to go through repeated ablutions ...
... furnace . The former from the fmallness of its particles , and extreme hardness of the ftone in which it is frequently found , requires to be triturated or pulverized as fmall as the fineft fand , to go through repeated ablutions ...
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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