6 PREFACE. 



the Commandant, of the Bureau des Affaires Indigenes at Algiers; the 

 commandants of the military circles of Biskra and Tougourt; Lieu- 

 tenant Bereaud, Chef du Bureau Arabe at the latter place; M. 

 Colombo, of the Compagnie de TOued Rirh at Biskra; Mr. Daniel Kid- 

 der, United States consul at Algiers; M. Vilmorin, of the seed tirm of 

 Vihnorin-Andrieux & Co., and M. Emerich, agent of that tirm for 

 America. 



A. J. PiKTERS, 



Botanist in Charge. 

 Office of Seed and Plant 



Introduction and Distribution, 



W(/s/i/'v(/fo», D. C., J^rhrut/ri/ 17, 1905. 



