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 45
الصفحة 32
... often denote either a profitable or barren Mine ; fuch as Spar Stones , Quartz , and Fluors resembling Cryftal , by the Germans termed ! 1 termed Fluffe , from their propenfity to melt in the 32 MINERALS , OF METALS AND.
... often denote either a profitable or barren Mine ; fuch as Spar Stones , Quartz , and Fluors resembling Cryftal , by the Germans termed ! 1 termed Fluffe , from their propenfity to melt in the 32 MINERALS , OF METALS AND.
الصفحة 33
... melt in the fire , which are no bad fymptoms of Metals , except thofe Stones be hard , opaque , and untractable . There are feveral other kinds of Stones worthy of notice , which we omit here , and refer to their proper places , when we ...
... melt in the fire , which are no bad fymptoms of Metals , except thofe Stones be hard , opaque , and untractable . There are feveral other kinds of Stones worthy of notice , which we omit here , and refer to their proper places , when we ...
الصفحة 38
... melt more eafily by adding falts to them , than they do of themselves . However , they always lofe a great deal of ... melting fire . But the Oil being of a more fixed nature , nature , ftill remains concealed therein , and is requifite ...
... melt more eafily by adding falts to them , than they do of themselves . However , they always lofe a great deal of ... melting fire . But the Oil being of a more fixed nature , nature , ftill remains concealed therein , and is requifite ...
الصفحة 39
... melted with Nitre , and it is used , though seldom , in afsaying of Copper ; but it is excellent to collect burnt Silver , and Silver filings , to a body ; yet it always makes the the Silver foul and brittle , which therefore is further ...
... melted with Nitre , and it is used , though seldom , in afsaying of Copper ; but it is excellent to collect burnt Silver , and Silver filings , to a body ; yet it always makes the the Silver foul and brittle , which therefore is further ...
الصفحة 40
... melting with the proper reducing flux . Alga Marina , Kelp , Kali , Fucus , or burnt Ore - weed , con- tains much falt ... melted with impure Copper Ore for those purposes . Charcoal , Carbo Ligneus , is endued with a vegetable Sulphur ...
... melting with the proper reducing flux . Alga Marina , Kelp , Kali , Fucus , or burnt Ore - weed , con- tains much falt ... melted with impure Copper Ore for those purposes . Charcoal , Carbo Ligneus , is endued with a vegetable Sulphur ...
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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