A popular guide to minerals : with chapters on the Bement Collection of minerals in the American Museum of Natural History, and the development of mineralogy . oxygen salts. The electric conductivity in the greaternumber of hitherto investigated binary compounds, increases withincreased temperature, a relation directly contravened by the metals;with these latter increasing temperatures diminish the non-conductors the complicated combinations are apparentlybetter conductors at higher temperatures. Among the binary com-pounds whose electro-negative elements are found in the 7thse
A popular guide to minerals : with chapters on the Bement Collection of minerals in the American Museum of Natural History, and the development of mineralogy . oxygen salts. The electric conductivity in the greaternumber of hitherto investigated binary compounds, increases withincreased temperature, a relation directly contravened by the metals;with these latter increasing temperatures diminish the non-conductors the complicated combinations are apparentlybetter conductors at higher temperatures. Among the binary com-pounds whose electro-negative elements are found in the 7thseries of the Periodic System, the conductivity increases with theatomic weight. On the contrary the exact opposite obtains withelectro-negative elements of the 6th series of the Periodic the conductivity rises in the oxides, sulphides, selenides, tellu-rides, of one and the same metal, while with the fluorides, chlorides,bromides, and iodides the opposite occurs. In 1899 G. Bodlander treated the now important question ofsolid solutions, which Vant Hoff first promulgated. This is aprofound study having to do with the intermixtures—solution so-. CYANITE St. Gothards, Switz.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmineral, bookyear1912
