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 |
من داخل الكتاب
النتائج 1-5 من 54
الصفحة
... Length or 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 ...
... Length or 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 ...
الصفحة 14
... length towards the center of the earth , are forced to a greater inland distance , in the confined tubes or veins of the earth , before they emerge to the furface , which we apprehend they do from various orifices and branches , like ...
... length towards the center of the earth , are forced to a greater inland distance , in the confined tubes or veins of the earth , before they emerge to the furface , which we apprehend they do from various orifices and branches , like ...
الصفحة 21
... length , under the fea , beyond low Water mark ; and the fea , in fome places , is but three fathoms over the back of the workings ; infomuch , that the Tinners under- neath hear the break , flux , ebb , and reflux of every wave , which ...
... length , under the fea , beyond low Water mark ; and the fea , in fome places , is but three fathoms over the back of the workings ; infomuch , that the Tinners under- neath hear the break , flux , ebb , and reflux of every wave , which ...
الصفحة 48
... length - wife than in depth . It is not uncommon to have the vein two or three feet wide , and in driving as many , not only the Mineral , but even the vein itself will be fcarce perceptible . We have not known any of this Mineral ...
... length - wife than in depth . It is not uncommon to have the vein two or three feet wide , and in driving as many , not only the Mineral , but even the vein itself will be fcarce perceptible . We have not known any of this Mineral ...
الصفحة 49
... lengths , but very flender and variously bent , undulated , and in fome parts broken . It is alfo fometimes foft , and covered with a blufh coloured efflorefcence , which is generally rich in Regulus . We have given our thoughts upon ...
... lengths , but very flender and variously bent , undulated , and in fome parts broken . It is alfo fometimes foft , and covered with a blufh coloured efflorefcence , which is generally rich in Regulus . We have given our thoughts upon ...
المحتوى
i | |
ii | |
iii | |
viii | |
1 | |
3 | |
9 | |
16 | |
124 | |
130 | |
136 | |
137 | |
144 | |
166 | |
173 | |
179 | |
21 | |
23 | |
29 | |
33 | |
35 | |
43 | |
44 | |
51 | |
57 | |
63 | |
71 | |
72 | |
80 | |
87 | |
97 | |
100 | |
106 | |
192 | |
201 | |
204 | |
213 | |
215 | |
222 | |
231 | |
238 | |
247 | |
253 | |
259 | |
271 | |
279 | |
286 | |
288 | |
292 | |
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