Transactions of the Cambridge Philosophical SocietyUniversity Press, 1822 |
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الصفحة 18
... minerals , and be able , from a comprehensive view of them all , to judge of the proba- bility of success in sinking a shaft , or driving a level . He might also make good use of this perspective , in tracing his shafts , and drifts ...
... minerals , and be able , from a comprehensive view of them all , to judge of the proba- bility of success in sinking a shaft , or driving a level . He might also make good use of this perspective , in tracing his shafts , and drifts ...
الصفحة 27
... mineral , he says , " Si vous êtes bien assuré de cette anomalie , " je désirerai beaucoup que vous voulussiez bien essayer si elle se " soutient a toutes les épaisseurs , ou si elle éprouve quelque " variation avec la longueur du ...
... mineral , he says , " Si vous êtes bien assuré de cette anomalie , " je désirerai beaucoup que vous voulussiez bien essayer si elle se " soutient a toutes les épaisseurs , ou si elle éprouve quelque " variation avec la longueur du ...
الصفحة 36
... mineral analysis . It remains there- fore to be ascertained whether their different actions on light be owing to a difference in composition or merely in their state of aggregation . Meanwhile , as we have seen that the union of two ...
... mineral analysis . It remains there- fore to be ascertained whether their different actions on light be owing to a difference in composition or merely in their state of aggregation . Meanwhile , as we have seen that the union of two ...
الصفحة 90
... mineral character of the several specimens , can by no means give all the information they are intended to convey ; it is proposed , by this Memoir , to confer an additional value on a portion of our collection , by explaining the views ...
... mineral character of the several specimens , can by no means give all the information they are intended to convey ; it is proposed , by this Memoir , to confer an additional value on a portion of our collection , by explaining the views ...
الصفحة 91
... mineral masses which form the subsoil , have been mentioned among the causes of these singular inequalities . It * These observations were made in consequence of a mistatement which the Author of this paper had remarked in the best ...
... mineral masses which form the subsoil , have been mentioned among the causes of these singular inequalities . It * These observations were made in consequence of a mistatement which the Author of this paper had remarked in the best ...
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ABCD acid angle Apophyllite appearance axis ball beds carbonate of lime centre character chlorite schist clay slate cliffs coast colour compact composed considerable Cornwall Cove crystalline crystals cube cylinder decomposing decomposition described deviation direction distance district dyke earthy East equation examination exhibited Fellow felspar fissures formation fracture fragments function Galvanic gazometer granite granite veins granular green green-stone greywacké Helford river horizontal hornblende hydrogen inches instance intermixed irregular killas laminæ limestone Llanbabo Llaneilian Llanerchymedd Llanfaelog Llangefni Llanrhyddlad magnetic mass mica mineral muriate Nare point nature nearly needle North observed occur old red sandstone parallel particles passing perpendicular phenomena piston plane plate polarization porphyritic portion present pyroxene quartz quartz rock resembling Rhoscolyn schistose schorl serpentine side slaty South specimens steatite strata structure substance surface texture trace Trin ureters variety vertical whole wire