£'titntifit �mtritan. being short, dry, and cute ; while this one of of the metal known by the name of arbor Di-Morrison is long, soft, and kinky. anl£. Cannon-J. C. Haddan, of "Cannon Row," The chloride of silver is fo rmed by mixing London, patentee.-This invention consists in together a solution of nitrate of silver with a lining the interior of old and new cannon with solution of common salt; it is termed lwrn rifl ed or plain tubes to fi t the bore. They are silver when fo und native. This

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... salt is soluble inserted into the cannon after it is cast, and in ammonia, and in a solution of the cyanide are made in one, two, or more pieces, longitu-of potassium; it is much used in photogra_ dinally or transversely. Such tubes for can-phy. By introducing a solution of potash or non are intended to be renewed from time to soda into one of nitrate of silver, a protoxyd time as they wear out, so that the body of the is formed; it falls to the bottom of the vessel cannon may serve for a long period, and not in the form of an olive colored powder. If