Arizona Agricultural Experiment Station. 184 



An analysis of an alkali crust from Hildreth's ranch near Saf- 

 ford showed it to consist in part of calcium sulphate, or gypsum, 

 which is an antidote for black alkali in moist, well-aerated ground. 

 Should the soils of this region prove to contain calcium sulphate 

 generally, the alkalinity of the artesian wells will, at least for a 

 time, be rendered harmless thereby. 



ARTESIAN WATERS OF SOUTHERN ARIZONA. 



(Parts in 100,000.) 



SUGAR BEETS ON THE UPPER GILA. 



Climatic conditions having seemed favorable to beet culture 

 on the upper Gila, the Station undertook to extend its work in 

 this line to this district. In order that the experiment might be 

 conclusive as possible, Mr. C. G. Arney, trained to this work on 

 the experimental farm, was put in charge of the plots. The 

 ground and part of the labor was furnished by various public spir- 



