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
... rich Copper Ore in Cornwall were thrown away as useless ! Indeed , it may be fafely faid , that cleven- twelfths of his Majesty's fubjects are totally unacquainted with any part or branch of our enquiry , that by itself , and its great ...
... rich Copper Ore in Cornwall were thrown away as useless ! Indeed , it may be fafely faid , that cleven- twelfths of his Majesty's fubjects are totally unacquainted with any part or branch of our enquiry , that by itself , and its great ...
الصفحة
... rich , yet expenfive to dress - Much skill in hy- draulicks and mechanicks required to work Copper Mines , ix . Corollary - Reflexion , x . Great increase , annual amount and value of Tin , x . Ditto of Copper Ore for the laft fifty ...
... rich , yet expenfive to dress - Much skill in hy- draulicks and mechanicks required to work Copper Mines , ix . Corollary - Reflexion , x . Great increase , annual amount and value of Tin , x . Ditto of Copper Ore for the laft fifty ...
الصفحة
... rich and lafting qualities - Elvan , two forts , 74. Moorstone or Granite - its compofition - 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 ...
... rich and lafting qualities - Elvan , two forts , 74. Moorstone or Granite - its compofition - 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 ...
الصفحة
... 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 , and a Kal or Kally Goffan - Kal very ...
... 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 , and a Kal or Kally Goffan - Kal very ...
الصفحة
... rich or fteril near the Cross - Courfe , which is another proof of the author's opinion of the origin of Metals - Tin and Copper Lodes antecedent to Cross - Courses , Mr. Whifton's hypothefis of the deluge by a comet ap- plied as a ...
... rich or fteril near the Cross - Courfe , which is another proof of the author's opinion of the origin of Metals - Tin and Copper Lodes antecedent to Cross - Courses , Mr. Whifton's hypothefis of the deluge by a comet ap- plied as a ...
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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