

PEYOTE OF ZACA'I'ECAS, Loplioplwra williamsii 



This form of the narcotic drug was called by the early .Spanish missionaries " Raiz diabolica," 

 or Devil's Root. Photograph of material in the Economic Collection, U. S. Department 

 of Agriculture, collected at Zacatecas, Mexico, by the late Edward Palmer. (Fig. 3.) 



