54 



Pour 50 mils of boiling water upon the digitalis contained in a 

 suitable vessel and allow it to macerate for one hour. Then strain ; 

 add the cinnamon water to the strained liquid and pass enough 

 water through the residue on the strainer to make the product meas- 

 ure 100.0 mils. Mix well. 



Infusion of digitalis must be freshly prepared from the leaves. 



DECOCTA— DECOCTIONS 



Decoctions are liquids made by boiling the drug in closed vessels 

 for fifteen minutes. They are then allowed to cool, strained and 

 water added to make up the required amount. There are no of- 

 ficial decoctions but the Pharmacopoeia includes a general formula 

 for their pi;eparation. Decoctions and infusions do not keep well 

 and should be freshly prepared for use. 



Decoction 



The substance coarsely comminuted 50. Gms. 



"Water, a sufficient quantity 



to make 1000. mils 



Put the substance in a suitable container provided with a cover. 

 Pour upon it 1000 mils of cold water, cover it well and boil for 15 

 minutes. Then let cool to about 40°C., express, strain the expressed 

 liquid and pass enough cold water through the strainer to make the 

 product measure 1000.0 mils. 



Decoctum Cetrabia 



Cetraria 5.0 Gm. 



"Water, a sufficient quantity 



to make 100.0 mils 



Cover the cetraria in a suitable vessel with 40 mils of cold water, 

 express after an hour and throw the liquid away. Then boil the 

 cetraria with 100.0 mils of water for half an hour, strain and pass 

 enough cold water through the strainer to make the product meas- 

 ure 100.0 mils. 



