Boston Journal of Philosophy and the Arts: Intended to Exhibit a View of the Progress of Discovery in Natural Philosophy, Mechanics, Chemistry, Geology and Mineralogy, Natural History, Comparative Anatomy and Physiology, Geography, Statistics, and the Fine and Useful Arts, 2권Cummings, Hilliard, & Company, 1825 |
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20 페이지
... colour , from the grain , and from small veins of carbonate of lime , which traverse calca- reous rocks ; those which are furnished by the fissility and silky lustre of clay - slate , the aspect and undulations more or less marked of ...
... colour , from the grain , and from small veins of carbonate of lime , which traverse calca- reous rocks ; those which are furnished by the fissility and silky lustre of clay - slate , the aspect and undulations more or less marked of ...
51 페이지
... coloured crystals . This method has given place to another , which is far superior , and founded upon an exact knowledge of the nature and proportion of this salt . It is well known that , according to the best analysis , the acetate of ...
... coloured crystals . This method has given place to another , which is far superior , and founded upon an exact knowledge of the nature and proportion of this salt . It is well known that , according to the best analysis , the acetate of ...
56 페이지
... colour is invariable in the resin ; and if amber is not always of a full yellowish brown , the paler varieties have a peculiar tinge of yellow which never exists in the resin ; the colour of these is comparatively watery , thin , and ...
... colour is invariable in the resin ; and if amber is not always of a full yellowish brown , the paler varieties have a peculiar tinge of yellow which never exists in the resin ; the colour of these is comparatively watery , thin , and ...
63 페이지
... colour is a steel grey , and it has much lustre . It is very brittle , and contains much potassium . Alloy of potassium , iron , and antimony . - Put at the bottom of a crucible some iron turnings , broken to small fragments , cover it ...
... colour is a steel grey , and it has much lustre . It is very brittle , and contains much potassium . Alloy of potassium , iron , and antimony . - Put at the bottom of a crucible some iron turnings , broken to small fragments , cover it ...
89 페이지
... colour , a brilliant lustre , a resinous fracture , which is sometimes conchoidal . Their texture is homogeneous , in which the ligneous structure is not always discernible , but in some specimens where the mineral has not lost its ...
... colour , a brilliant lustre , a resinous fracture , which is sometimes conchoidal . Their texture is homogeneous , in which the ligneous structure is not always discernible , but in some specimens where the mineral has not lost its ...
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action angle animals appears arrack ascertained atmosphere aurora borealis ball beds carbonic carbonic acid cause centre circumstances clay coco-nut coefficient colour conductor considerable contains copper crystals degree deposits diameter direction distance earth electricity employed equal Europe evaporation experiments exposed feet fissures fluid formation geognostical glass gneiss granite greywackes height hornblende hyæna hydrogen inches iron Klaproth labour larvæ latitude less light lignite limestone luminous magnetic manner mass means mercury metal miles mineral mixture mountains muriatic acid nature nearly needle nitric acid observed obtained oxide oxygen paratonnerre pass plate platinum poison porphyries portion present produced proportion Puracé quantity quartz rays remarkable rendered rocks selenium shock slate species specimens stone substance sufficient sulphuric acid surface syenite temperature term thermometer tion trachytes tree vapour vessel volcano whole wire zinc