63 



the solvent 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. 



VtNUM COLCHICI SeMINIS 



Fluidextract of Colchicum Seed 5.0 mils 



Alcohol 5.5 mils 



White Wine 35.5 mils 



to make 50.0 e.c. 



Mix them. Set the mixture aside for two days; then filter 

 through paper in a well covered funnel. 



OLEORESINAB— OLBORESINS 



The pharmaceutic oleoresins are liquid preparations consist- 

 ing principally of volatile oils and resins, obtained by the extrac- 

 tion from vegetable drugs by percolation with ether or alcohol and 

 subsequent distillation or evaporation of the solvent from the dis- 

 solved 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. (Tiirpentine, Copaiba) . 

 They are quite different from the pharmaceutic class described 

 above. Oleoresins are the m.ost concentrated of all liquid prepara- 

 tions 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 fliuidextracts. 'They are placed in a percolator 

 without moistening, the menstruum is usually different, and a spe- 

 cial percolator for volatile liquids should be used for the best re- 

 sults. The following 6 are official: 



Solvent 

 Ether 



Solvent 

 Alcohol 



f Oleoresina Aspidii 

 I ' ' Capsici 



^ ' ' Petroselini 



I ' ' Piperis 



L ' ' Zingiberis 



\ ' ' Cubebae 



Oleoresin of Aspidium 

 Capsicum 

 Parsley Fruit 

 Pepper 

 Ginger 



Cubebs 



