Unless otherwise directed, Infusions are prepared by the general official process:

The substance, coarsely comminuted.....................................

5 Gm.

Boiling Water ........................................................................

100 Cc.

Pour the boiling Water on the Drug, in a suitable vessel provided with a cover, and let it stand for half an hour; strain with expression and add enough Water through the strainer to make 100 Cc.

Caution. - The strength of Infusions of energetic or powerful substances should be especially prescribed. The following Infusions are official, being prepared of different strengths and by other processes than directed in the general formula.

Gm. in 100 Cc.

Infusum Digitalis . alcohol 10; cinnamon water 15; digitalis

1.5

Infusum Sennae Comp. (Black Draught) . . fennel 2; senna

6.

manna, magnesium sulph., of each

12.

To allow the emulsin and amygdalin of wild cherry to react, with the production of hydrocyanic acid and oil of bitter almonds, the drug must first be macerated with cold water, and is then extracted by percolation.

Gm. in 100 Cc.

Infusum Pruni Virginianae ...................................................

wild cherry 4.