Edin. Infusion of Cinchona. Infusum Cinchonae sine Calore, Dub. Cold Infusion of Cinchona.

"Take of cinchona bark, bruised, one ounce; water, one pound (twelve ounces by measure. Dub.). Macerate for twenty-four hours, agitating frequently, and strain. (Triturate the bark with a little of the water, and whilst triturating add the remainder: then macerate for twenty-four hours, occasionally agitating, and decant the clear liquor. -Dub.)."

The directions of the Dublin College for making this infusion are preferable to those of the Edinburgh College. It is nearly clear, but deposits by rest a small quantity of a brick-red sediment. It is affected by the same substances, and its properties and use are the same as those of the former preparation, from which it differs chiefly in strength. The residuum may be used for some purposes, as its active principle is not nearly exhausted.