Contents include: Data; correspondence; map; articles and reports -- Area and use of water by phreatophytes in the western United States, by T.W. Robinson, U.S.G.S., January 1949 (unpub.); Arizona agriculture, 1946, University of Arizona, Agricultural Experiment Station Bull. 202(January 1946), and Arizona agriculture, 1948, Univ. of Ariz., Agricultural Experiment Station Bull. 211(January 1948), both by George Barr; Fitting cropping systems to water supplies in central Arizona, by Charles Hobart and Karl Harris, Univ. of Ariz., Agric. Ext. Serv. Circular 127(April 1946); and Economical uses of irrigation water for field and truck crops, by L.D. Doneen, California Agriculture(May 1948).