Preparation.—The best preparation for experiment will be a tincture of the recent root, in the proportion of ℥viij. to Alcohol 76° Oj.; note its effect in small as well as large doses.
The A. Incarnata, A. Syriaca, etc., deserve a careful investigation. In weak infusion they all prove diaphoretic, and to some extent diuretic. It is claimed by those who have made considerable use of them, that they stimulate all the secretions.