LETTER OF TRANSMITTAL 



U. S. Depabt3iext of Agricultttbe, 



BuEEAu OF Plant Industry. 



Office of the Chief. 

 'Washington^ D. C, September 6, 1905. 

 Sir : I have the honor to transmit herewith and to recommend for 

 publication as Bulletin Xo. 80 of the series of this Bureau the accom- 

 panying paper, entitled "Agriculture without Irrigation in the Sahara 

 Desert." 



This paper was prepared by ^Ir. Thomas H. Kearney, one of the 

 physiologists of this Bureau, and the data for it were obtained on a 

 trip which he made to northern Africa for the Office of Seed and 

 Plant Introduction and Distribution, primarily for the importation 

 into the United States of offshoots of valuable Tunisian date varieties. 

 It is believed that the methods described may be usefid in some cases 

 in our southwestern desert regions where date culture is being intro- 

 duced. 



The accompanying illustrations are necessary to a clear understand- 

 ing of the text of this bulletin. 



Respectfully. B. T. Gallowat, 



Chief of Bureau. 

 Hon. James Wilson. 



Secretary of Afjrifoltxire. 



3 



