Arizona Agricultural Experiment Station. 180 

 DEPARTMENT OF CHEMISTRY. 



The main work of the chemists for the year has been with the 

 irrigating waters of the Territory. Daily samples have been se- 

 cured for nearly a year from the Consolidated canal at Mesa City, 

 representing the Salt river supply; for several weeks or months, 

 respectively, from the Gila river at Buckeye, and at Florence; 

 and also for a number of months from the Colorado river at 

 Yuma. The examination of these numerous samples, involving 

 much technical work, is yet incomplete. 



RIVER WATERS. 



Representative samples from a flow of one week, both high 

 and low water, from the Colorado at Yuma, the Gila at Florence, 

 and the Salt at Mesa City; also the Buckeye canal supply from 

 the lower Gila, show the following composition; 



PARTIAL ANALYSES OF IRRIGATING WATERS. 



