Transactions of the Cambridge Philosophical SocietyUniversity Press, 1822 |
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الصفحة 21
... variety of the angles they include , and of the positions they hold with respect to the prominent lines or axes of symmetry of the primitive molecules , and the question immediately suggests itself , what are the circum- stances which ...
... variety of the angles they include , and of the positions they hold with respect to the prominent lines or axes of symmetry of the primitive molecules , and the question immediately suggests itself , what are the circum- stances which ...
الصفحة 25
... variety of the Fish - eye Stone ( Apophyllite ) which possesses a single axis of double refraction , has been noticed by Dr. Brewster , and since shewn in my paper already alluded to , to indicate an action on polarized light very ...
... variety of the Fish - eye Stone ( Apophyllite ) which possesses a single axis of double refraction , has been noticed by Dr. Brewster , and since shewn in my paper already alluded to , to indicate an action on polarized light very ...
الصفحة 26
... variety , their tints , instead of being alternately white and black , with a little intermediate shading of lilac and greenish yellow , as described by Dr. Brewster , being those of the following Table , in which the colour of the ...
... variety , their tints , instead of being alternately white and black , with a little intermediate shading of lilac and greenish yellow , as described by Dr. Brewster , being those of the following Table , in which the colour of the ...
الصفحة 27
... variety of this 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 ...
... variety of this 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 ...
الصفحة 28
... variety with one axis , which seems to form the central portion and upper lamina of Dr. Brewster's Tesselite , and of which I need not here particularize the succession of colours , as it is given at full length in my paper above ...
... variety with one axis , which seems to form the central portion and upper lamina of Dr. Brewster's Tesselite , and of which I need not here particularize the succession of colours , as it is given at full length in my paper above ...
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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