"Take of cascarilla bark, bruised, an ounce and a half; boiling distilled water, a pint. Macerate for two hours in a lightly-covered vessel, and strain."

This is a clear, pale, reddish-brown infusion, having the aromatic odour of the bark, and a bitterish, aromatic taste. It is incompatible with the following substances, which it precipitates: namely, lime-water, infusion of galls, infusion of yellow cinchona bark, solutions of nitrate of silver, acetate and diacetate of lead, sulphate of zinc, and salts of iron, which are slowly thrown down, of a pale olive colour.

Medical properties and uses. - It is a slight stimulant and tonic; and is advantageously given in some alvine fluxes, particularly such as occur after measles; and in the aphtha gangrenosa of infants. In combination with carbonate of soda, it is an excellent tonic in those affections of children which are dependant on a weak state of the digestive organs, and accompanied with acidity. The dose is from f jss. to f iij