Transactions of the Cambridge Philosophical SocietyUniversity Press, 1822 |
من داخل الكتاب
النتائج 1-5 من 39
الصفحة 98
... earthy and decomposing . The large prismatic crystals are not unusually of that structure which Haüy calls hemitrope ; and their recent fracture sometimes exposes small 98 Professor SEDGWICK on the Geology of Cornwall , & c .
... earthy and decomposing . The large prismatic crystals are not unusually of that structure which Haüy calls hemitrope ; and their recent fracture sometimes exposes small 98 Professor SEDGWICK on the Geology of Cornwall , & c .
الصفحة 100
... earthy state of one of its constituents makes it pervious to the moisture of the atmosphere , and therefore ill fitted for the purposes of architecture . We may naturally expect to find the most striking phenomena , arising from the ...
... earthy state of one of its constituents makes it pervious to the moisture of the atmosphere , and therefore ill fitted for the purposes of architecture . We may naturally expect to find the most striking phenomena , arising from the ...
الصفحة 103
... earthy parts of the stone ; and this is unfortunately the * The separation of decomposing granite into regular prismatic blocks , has long excited the attention of Geologists . A remarkable instance of the fact is mentioned by Saussure ...
... earthy parts of the stone ; and this is unfortunately the * The separation of decomposing granite into regular prismatic blocks , has long excited the attention of Geologists . A remarkable instance of the fact is mentioned by Saussure ...
الصفحة 104
... earthy siliceous beds , obviously derived from the granite ; which may be considered as an exhibition of that rock in its last stage of decomposition . It must however be observed that the rock in some instances presents an appearance ...
... earthy siliceous beds , obviously derived from the granite ; which may be considered as an exhibition of that rock in its last stage of decomposition . It must however be observed that the rock in some instances presents an appearance ...
الصفحة 105
... earthy chlorite , is found in contact with the killas at the junction near Polmear Porth . A similar aggregate from the eastern side of Pra - sands has already been mentioned . A still more common rock is composed of quartz , felspar ...
... earthy chlorite , is found in contact with the killas at the junction near Polmear Porth . A similar aggregate from the eastern side of Pra - sands has already been mentioned . A still more common rock is composed of quartz , felspar ...
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
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