Mineralogia CornubiensisРипол Классик, 1778 - 331 من الصفحات |
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الصفحة
... , in the direction as the usesnl art os Mining, as it is hoped this treatise may afford, hat been long complained of. It cannot, however, be denied that A our our Mines are mostly well conductedz yet no small advantages. PREFACE.
... , in the direction as the usesnl art os Mining, as it is hoped this treatise may afford, hat been long complained of. It cannot, however, be denied that A our our Mines are mostly well conductedz yet no small advantages. PREFACE.
الصفحة
... small veine of LodesuþLodes squeezed small in hard ground, 104. Of metallick Lodes concreting Each whan-Why Tin Lodes were antecedent to parallel Gossan and Crosw-Gossan. Lodcs, to 5. The inclination or underlie of Lodes towardi each ...
... small veine of LodesuþLodes squeezed small in hard ground, 104. Of metallick Lodes concreting Each whan-Why Tin Lodes were antecedent to parallel Gossan and Crosw-Gossan. Lodcs, to 5. The inclination or underlie of Lodes towardi each ...
الصفحة x
... small', but, in the preceding reigns of Janics the first, and Charles the firfl, the mount of Block-Tin yearly, was from fourteen hundred to sixteen hundred to. lt was also found b the last two farms in queen Anne's reign, and the ...
... small', but, in the preceding reigns of Janics the first, and Charles the firfl, the mount of Block-Tin yearly, was from fourteen hundred to sixteen hundred to. lt was also found b the last two farms in queen Anne's reign, and the ...
الصفحة 20
... small, es ecially When the Mine is sunk under low Water mark, or wort: under the sea; yet it is absolutely certain, that it is less in proportion to the ground discovered under the level of the sea, than above. How this should be, is ...
... small, es ecially When the Mine is sunk under low Water mark, or wort: under the sea; yet it is absolutely certain, that it is less in proportion to the ground discovered under the level of the sea, than above. How this should be, is ...
الصفحة 22
... small clefts and interfiices of the firata, beiow the Force and action of the sea; and in time, probably, incrustates and fills up those very minute fissures, with a petri[active gluten, if it is at all charged with such principles ...
... small clefts and interfiices of the firata, beiow the Force and action of the sea; and in time, probably, incrustates and fills up those very minute fissures, with a petri[active gluten, if it is at all charged with such principles ...
المحتوى
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The corpuſcular philoſophers accomlſtzfor it ſlang | 118 |
Of the Sumph or finiſ of the Mind which ſhould be in | 170 |
Inſtancesef the mortiferous effects oſ Damps 200 | 199 |
The various Manuductions uſed in dreſſing of Cozfer and Lead Ores and Sampling Copper Ores for S | 239 |
Drefliug of Lead Ore nearly the ſinne as Copper 243 | 245 |
and tracting 249 How to diſcover the contents of a Mineral | 253 |
elncidatedhMethodto try the firſt ſoortia ſhe Silverexplained | 259 |
of a ton oſ Copper Ore by the aſſay 264 26 5 266 To aſſay | 271 |
and repeated ſmeltings therein 274 Of the Metal calciner | 279 |
charging fluxing and tapping the ſurnaceSizing the ſcoria | 285 |
Of ſelling or barteririg black Tin for whitÞForm of a Tin bill | 292 |
BOOK | 214 |
Pitwor s and ſhimpings 223 Of the crop and rough Tin | 231 |
CHAP | 318 |
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
Adit almoſt alſo anſwer Antimony becauſe bottom called caſe cauſe colour conſequence conſider conſiderable Copper Cornwall courſe Cryſtal depth deſcribed different diſcovered diſſolved diſtance dreſſing driſt earth eaſily eaſt effect eſpecially Eſq expence fathom feet fifty find fine fire firſt Fiſſures five fix Gold Goſſan graſs horſes houſe hundred inches inſtance Iron itſelf laſt leaſt leſs likewiſe Lode loſs meaſure Metals Mineral Mines Minos moſt Mundick muſt neceſſary obſerved off perſon pounds preſent proceſs purpoſe quantity raiſed reaſon Redruth reſpect riſe ſaid ſalt ſame ſay ſea ſee ſeems ſeen ſeldom ſeparate ſerve ſet ſeven ſeveral Shaft ſhall Shaſt ſhillings Shode ſhort ſhould ſide ſince ſink ſix ſmall ſolid ſome ſometimes ſoon ſor ſorts ſound ſouth ſquare ſtanding ſtate ſteam ſtone Stones ſtrata ſubject ſubſtance ſuch ſufficient ſunk ſuppoſe ſurſace themſelves theſe thoſe thouſand uſe uſually vein waſhed waſte weſt White Tin whoſe