DRUG PLANTS 



379 



of the Andes mountains of South America (fig. 246). The first 

 recorded use of the drug was in 1638 although undoubtedly the 

 Indians had used it long before this. Great demands were subse- 

 quently made upon the Andean supply, which was closely 

 guarded by the natives, until finally the British and Dutch col- 





Fig. 247. — Cascara is obtained from the bark of our native buckthorn tree. 

 {Courtesy U. S. Forest Service.) 



lectors sent to South America were able to smuggle out seeds 

 which were taken to Java and India, where most of the world's 

 supply is now produced. The Dutch have a monopoly on the 

 quinine that enters the world's markets today, since that pro- 

 duced in British India is wholly consumed within that country. 



