236 PIIARMACOPCEIA, 



EXPECTORANT BALLS. 



Ko. I. Ginn amnioniacum, half an ounce; 

 Powdered s(juill, one dram. 

 Castile soap, two drams. 

 Honey enough to form the ball for one 

 dose. 

 No. 2. AssafcEtida, three drams^. 

 Gal ban um, one d:am. 

 Salt of hartshorn, half a dram. 

 Ginger, one dram and a half. 

 Honey, enough to form the ball for one 

 dose. 

 No. 3. Aromatic powder, two drams. 

 Camphor one dram and a half. 

 Powdered squill, and balsam of tolu, 

 of each one dram. 

 Honey enough to form the ball for one 

 dose. 



EXTRACTS are made by infusing any 

 substance in a liquid that is capable of dis- 

 solving and extracting its essential principle, 

 so that it may be procured, free from the 

 other useless parts. When tlie essential 

 principle is of a resinous nature, we employ 

 rectified spirit to extract it; it' it be a com- 

 pound of gum and resin, proof spirit is bet- 

 ter adapted. 



