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 x
... equal to fifteen hundred tons & annum . Since the foregoing time , we obferve a gradual increafe for thirty years following ; for , in the year 1742 , a propofal was made by the Mines Royal Company Company in London , to raise one ...
... equal to fifteen hundred tons & annum . Since the foregoing time , we obferve a gradual increafe for thirty years following ; for , in the year 1742 , a propofal was made by the Mines Royal Company Company in London , to raise one ...
الصفحة 2
... equal evidences of the boundlefs fkill of the divine Artift , who hath furnished us with no less matter of meditation and wonder in the conformation and inftinct of the moft contemptible infect , than in the attributed fagacity and ...
... equal evidences of the boundlefs fkill of the divine Artift , who hath furnished us with no less matter of meditation and wonder in the conformation and inftinct of the moft contemptible infect , than in the attributed fagacity and ...
الصفحة 13
... equal to this immenfe preffure , upon a body of water , in order to carry it to any distance whatever , or raise it to any conceivable height ! Imagine then , with what inexpreffible force the water from such a preffure , must be ...
... equal to this immenfe preffure , upon a body of water , in order to carry it to any distance whatever , or raise it to any conceivable height ! Imagine then , with what inexpreffible force the water from such a preffure , must be ...
الصفحة 32
... equal to Stour- bridge and other Clays ; infomuch that plenty of it has been . fent to Bristol , and the Welch Copper - works , for the purposes before mentioned ; befides that famous yellow Clay in the parish of Lannant , which has ...
... equal to Stour- bridge and other Clays ; infomuch that plenty of it has been . fent to Bristol , and the Welch Copper - works , for the purposes before mentioned ; befides that famous yellow Clay in the parish of Lannant , which has ...
الصفحة 36
... equal Metal , which alone is proof against the piercing auger of the Teredo : even petrified wood may be bored by the jaws of this worm , which we are told will penetrate Stone itself . Mons . de la Voye fpeaks of an ancient wall in the ...
... equal Metal , which alone is proof against the piercing auger of the Teredo : even petrified wood may be bored by the jaws of this worm , which we are told will penetrate Stone itself . Mons . de la Voye fpeaks of an ancient wall in the ...
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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