Bismuth, or Tin-glass, one of the semi-metals, of a reddish or light yellow colour, and a lamel-lated texture: it is moderately hard and brittle, so that it breaks under the hammer, and may even be re-., duced to powder.

Most metallic substances, by an union with bismuth, become more fusible; hence it is used in the making of solder, printers' types, pewter, etc.

Bismuth reduced to powder, mixed with the white of eggs, and applied to wood, gives it the appearance of being silvered - when it is gradually dried, and rubbed with a polisher.

This semi-metal is commonly deposited in cobalt-ores; which, when of a high red colour, are called bismuth bloom, or flowers of bismuth. To this mixture may be ascribed the property which bis-muth-ore has of making sympathetic ink, similar to that formed by a solution of the regulus of co-balt.—See Ink.

In dyeing, a solution of Tin-glass in aqua fortis has lately been recommended by Dambournek, for fixing certain colours on wool, in preference to alum, or other neutral salts. - See Dyeing.

In medicine, the calx and flowers of bismuth were formerly used, in cases where antimonial preparations are now employed with greater safety, and equal effect; so that the former are, at present, chiefly converted into pigments and cosmetics. - Neverthe-less, we are possessed of the most convincing proofs, that the magistery of bismuth is one of the most powerful anti-spasmodies, especially in cramps of the stomach. When cautiously administered, in doses from half a grain to one grain, in simple water, repeated every half hour, or oftener, according to circumstances, it affords speedy relief of the most excruciating pain ; and is, in this re-spect, of superior efficacy to the celebrated flowers of zinc. But we think it our duty to repeat, that both medicines require the greatest precaution.