The Citrated Borate of Magnesia, which consists of Boracite, 3MgO,4B203, and Citrate of Ammonia, has been recommended as a remedy for renal calculus. It has not been proved. (Brit. Journ. Horn., vol. xxiv.)

A short notice of this occurs in Brit. Journ. of Horn., vol. xi.

Preparation. - Trituration.