+ Experiment Station Office. Botanical and Chemical Laboratories. Tucson. 



N Range Study Tract, Tucson. (Co-operative, U. S. D. A.) 



k E.\penment Station Farm. Phoenix. 



□ Date Palm Orchard, Tempe. (Co-operative, 0. S. D. A.) 



! Soil and Alkali Survey. (Co-operative. U. S. D. A.) 



II Sugar Beet Experiments, Pima, Thatcher and Safford. 



MA? SHOWING PRESENT ARRANGEMENT OF EXFERIMENT STATION WORK. 



