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Scientific American, Vol. 56, No. 7 (1887) (1887)

leaf 8

An illustration from Scientific American, Vol. 56, No. 7 (1887), 1887, leaf 8
to hold water, but naturalists have proved it to be altogether upon hardness; many hard substances, varies in color from bright red to purple red, and ex- merely a temporary air chamber, and closely connected as, for example, glass, scratch with great readiness ists in several degrees of fineness,… … THE AUSTRALIAN BUSTARD. he is termed ‘‘throwing off,” but a display of this metallic surface to an extent quite inferior to oxide of Rouge is used to ‘‘ color” metal work and to polish kind can only be seen early in the morning or at sun- jron when in a state of fineness similar to rouge or glass;…

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