Carbonate of Zinc. (ZnO, CO2 + HO) + 2 (ZnO, HO). Prepared by precipitating a solution of Sulphate of Zinc with Carbonate of Soda.

Zinci Carbonas Impura. Native or Impure Carbonate of Zinc. Calamina. Calamine. Carbonate of Zinc largely adulterated with Sulphate of Baryta and Oxide of Iron.

Med. Prop. and Action. Calamine was formerly used externally in the form of ointment, Cerat. Calamines (Ph. L.) (Prepared Calamine, Wax āā viiss., Olive Oil Oj ), or as a dusting powder. It has, however, been superseded by the Carbonate of Zinc, which is preferable on account of its greater purity. The Carbonate in its medicinal properties closely resembles the Oxide. It may be used externally as a dusting powder mixed with starch, or as an ointment rubbed up with Ung. Simp. Internally it is not often prescribed, but its action is probably identical with that of the Oxide (Garrod).

Dote of Zinci Carbonas, gr. j. - gr. x., in pill or powder.

2831. Therapeutic Uses

In Burns, Scalds, Excoriations, Chapped Hands and Lips, Bed Sores, &c., few applications produce more benefit than the Calamine Ointment (ante). It should be spread smoothly on lint, and applied two or three times daily. Weak and Indolent Ulcers, also, improve and heal under its use. As a means of preventing Pitting in Small-pox, Prof. Bennett recommends, in preference to all other applications, the following plaster: -2831 Therapeutic Uses 249 Zinci Carb. iij., Zinci Oxid. j., Ol. OlivAe q. s., M. This plaster should be of a firm consistence. Dr. Gason,§ of Rome, effected this object effectually by dusting the whole surface thickly with powdered Calamine; it was found also to have a very soothing effect.