CASCARA SAGRADA 



421 



Cascara bark contains from 0.0137 to 0.0223 per cent of man- 

 ganese. Many other laxative drugs contain manganese, and West- 

 man and Rowat have suggested the establishment of a manganese 



FIG. 182. A means of moving dried Cascara bark to bark cutter. After Johnson 



and Hindman. 



FIG. 183. Cutting and sacking dried Cascara bark. After Johnson and Hindman. 



number for the valuation of the extracts of this class of drugs. Amer. 

 Jour. Pharm., 1918, 90, p. 271. 



Rhamnus Californica, a shrub indigenous to southern California 

 and the neighboring States, yields a bark which closely resembles 



