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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1863 Excerpt:... greatly in causing it to explode. Although giving so violent an explosion when alone, h may be burnt without danger when mixed with a large excess of oxide of copper, as in the ordinary process of organic analysis. It then gives off a mixture of two volumes of carbonic acid, and one volume of nitrogen. Gay-Luesac and Liebig made an analysis of the salt in this manner, with the annexed results: 1000 800 100-0 For further remarks on the fulminates, see Fulminating Mercury.--C. G. W. FUR. Furs are subject to injury by several species of moths, whose instinct leads them to deposit their eggs at the roots of the fine hair of animals. Linnseus mentions five species that prey upon cloth and furs, of which Tinea pellionella, T. vestionella and T. tapclzella are the most destructive. No sooner is the worm hatched than it cats its path through the fur, and continues increasingly destructive until it arrives at its full growth, and forms itself a silken covering, from which, in a short time, it again emerges a perfect moth. Another cause of the decay of fur is the moisture to which they are frequently exposed; the delicate structure of the fine under fur cannot be preserved when any dampness is allowed to remain in the skin. This fact is well known to the leather manufacturer, who, having wetted his skins, allows them to remain in a damp cellar for a few days, for the purpose of removing the hair, which is pulled out with the greatest facility, after remaining only one week in a moist condition. It follows from these observations, that to preserve the fur it is necessary to keep them dry, and to protect them from moths; if exposed to rain or damp, they must be dried at a moderate distance from the fire; and when put by for the summer should be combed and beaten with...