34. PHAHMACY 



add five thousand mils of boiling water, mix thorougUy and allow 

 it to macerate in a covered container for two hours in a warm place. 

 Then transfer the moist drug to a tinned or enameled metallic per- 

 colator and allow percolation to proceed, gradually adding boiling 

 water until the drug is exhausted. Evaporate the percolate on a 

 water bath or steam bath to the volume specified, and when cold add 

 the alcohol directed and mix thoroughly. 



VINI — WINES 



Wines are liquid preparations containing the soluble principles 

 of medicinal substances, dissolved in wine. They may be prepared 

 by solution or maceration, and differ from tinctures only in the sol- 

 vent employed, i.e., wine instead of alcohol in various strengths. 

 Ten were official in the Pharmacopoeia of 1900 but they were all 

 dropped from the last revision. 



OLEORESINAE — OLEORESINS 



The pharmaceutic oleoresins are liquid preparations consisting 

 principally of volatile oils and resins, obtained by the extraction 

 from vegetable drugs by percolation with ether or alcohol and subse- 

 quent distillation or evaporation of the solvent from the dissolved 

 portions. There are two groups of oleoresins, the natural and the 

 pharmaceutic. The former are mixtures of volatile oils and resins 

 which exude from plants. (Turpentine, Copaiba). They are quite 

 different from the pharmaceutic class described above. Oleoresins 

 are the most concentrated of all liquid preparations of drugs. Their 

 strength varies, however, but usually runs from 5 to 10 times the 

 strength of the crude drug. 



Preparation. With slight differences they are prepared in a 

 manner similar to fluidextracts. They are placed in a percolator 

 without moistening, the menstruum is usually different, and a special 

 percolator for volatile liquids should be used for the best results. 

 The following 6 are official : 



Oleoresina Aspidii Oleoresin of Aspidium 



Oleoresina Capsici Oleoresin of Capsicum 



Oleoresina Petroselini Oleoresin of Parsley Fruit 



Oleoresina Piperis Oleoresin of Pepper 



Oleoresina Zingiberis Oleoresin of Ginger 



Oleoresina Cubebse Oleoresin of Ciibebs 



ACETA — VINEGARS 



Solvent 

 Ether 



Solvent 

 Alcohol 



These are liquid preparations of the active principles of drugs, 

 prepared by extraction with Diluted Acetic Acid. They resemble 



