| UN ITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 271 
Contribution from the Bureau of Plant Industry 
WM. A. TAYLOR, Chief 
e 
Washington, D. C. PROFESSIONAL PAPER _ September 28, 1915 | f 
DATES OF EGYPT AND THE SUDAN 
By 
‘S. C. MASON, Arboriculturist, Crop Physiology and 
Breeding Investigations 
ea 
Introduction 
Nile Valley Dates znd Their Climatic 
WASHINGTON 
‘GOVERNMENT PRINTING OFFICE 
1915 
