Abstract Unavailable.

Members of the University of California Research Committee on Pear Decline include the following researchers:

From the U. C. Davis campus—D. C. Alderman, P. B. Catlin, W. H. Griggs, H. T. Hartmann, Kay Ryugo and Kiyoto Uriu, pomologists; L. J. Booher and D. W. Henderson, irrigationists; B. F. Lownsbery, nematologist, and George Nyland, H. J. O'Reilly and T. A. Shalla, plant pathologists.

From the Berkeley campus—C. S. Davis, D. D. Jensen and H. F. Madsen, entomologists, and C. E. Yarwood, plant pathologist. From the Riverside campus—R. C. Dickson, entomologist, and Henry Schneider, plant pathologist.

U. S. Department of Agriculture, Riverside—L. S. Jones and George Kaloostian, entomologists, and T. S. Pine, plant pathologist. California State Department of Agriculture, Sacramento—C. W. Nichols, plant pathologist. Oregon State University—M. N. Westwood, horticulturist.