Abstract Unavailable.

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

From the U.C. Davis campus—D. C. Alderman, P. B. Catlin, W. H. Griggs, If. T. Hartmann, Kay Ryugo and Kiyoto Uriy pomologists; L. I. Booher and D. W. Henderson, irrigationists; B. F. Lownsbery, nematologist, and George Nyland, H. I. 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 Ka-loostian, entomologists, and T. S. Pine, plant pathologist. California State Department of Agriculture, Sacramento—C. W. Nichols, plant pathologist. Oregon Slate University—M. N. Westwood, horticulturist.

In addition, the following personnel of the University of California and California State Department of Agriculture have contributed to this report: J. B. Bailey, C. Q. Gonzales, S. Gotan, A. A. Millecan, R. L. Rackham, and Y. Tanada.