Subcarbonate of Bismuth. Carbonate of Bismuth. Prepared by adding a solution of pure Bismuth in Nitric Acid to an aqueous solution of the Carbonate of Soda: the white precipitate thus obtained is the Subcarbonate of Bismuth. It requires repeated washings to remove the soda. It must be preserved in well-stopp bottles.

*Diseases of the Skin, p. 449.

Mat, Med., vol. i. p. 761.

Bull, de Therap., vol. lxiii. p. 508. § Rev. Med. Chir. de Paris, Aug.

1854. || lancet, May 12, 1860. ¶ Ibid., July 11,1863.

Med. Prop. and Action. This preparation has been proposed byProf. Hannon,* of Brussels, as a substitute for the Nitrate. According to this writer, it is readily soluble in the gastric juice: its action is rapid, it produces no sensation of weight in the stomach, rapely constipates, colours the stools less than the Nitrate, and may be employed for a long time without oppressing the stomach It also possesses the great advantage over the Nitrate of readily neuntralising the acids in excess which are found in the prim vi. Its action appears to be sedative during the first days of its employment, and subsequently it a a tonic. It is perfectly insipid, excites no repugnance, and may be taken before meals.

Dote for adults, gr. xv. - xlv. in divided doses daily: for children gr. j. - v. Adults take it in water, children in honey. It may also be given in the form of lozenge.

558. Therapeutic Uses

These closely resemble the Nitrate, it being chiefly recommended in Gastric and Intestinal Affections. Dr. Hannon remarks that all cases of Gastralgia consecutive upon phelgmasiAe of the digestive passages, and those in which digestion is laborious, accompanied with putrid or acid eructations, or in which there is a tendency to diarrho?a and spasmodic vomiting, demand the employment of the Subcarbonate. In the Vomitinm of Children during dentition, and in the Diarrha of weak Children, it may also be employed with every prospect of success.