(Sn. Eq.=59.) Granulated Tin. Appendix B.

Grain Tin, prepared by fusing and pouring it into cold water, is now introduced for the preparation of chloride of tin.

Therapeutics. This metal is not, at the present time, often used as a medicine, but was formerly employed in the form of powder, pulvis stanni, as an anthelmintic, given in about half-ounce doses, mixed with honey, treacle, or some confection: it is supposed by some to act simply as a mechanical agent; by others, on account of the hydrogen set free by the action of the gastric juice on the metal. Solution of Chloride of Tin. Appendix B.

Prep. By dissolving tin in dilute hydrochloric acid by the aid of heat. One ounce of the metal is contained in five fluid ounces of the solution.

Prop., Comp., & Use. The solution containing the protochlo-ride of the metal (Sn Cl) is a powerful deoxidizing agent; it gives with solutions containing gold, a purple colour, and is used in testing.