1040 THE BELL SYSTEM TECHNICAL JOURNAL, OCTOBER 1951 



nisms" (1945); member of American Mathematical Society, the Mathematical 

 Association of America, the Edinburgh Mathematical Society, the American 

 Physical Society, Phi Beta Kappa and Sigma Xi; and Fellow of New York 

 Academy of Sciences. 



W. P. Mason, B.S. in E.E., University of Kansas, 1921; M.A., Ph.D., 

 Columbia, 1928. Bell Telephone Laboratories, 1921-. Dr. Mason has been 

 engaged principally in investigating the properties and applications of piezo- 

 electric crystals and in the study of ultrasonics. 



H. J McSkimin, B.S., University of Illinois, 1937; M.S., New York Uni- 

 versity, 1940. Bell Telephone Laboratories, 193 7-. Here he has worked 

 chiefly on crystal filters, piezoelectric elements, ADP crystals, studies of the 

 acoustic properties of liquids and solids. Member of Acoustical Society of 

 America, Eta Kappa Nu, and Sigma Xi. 



J. R. Pierce, B.S., in Electrical Engineering, California Institute of 

 Technology, 1933; Ph.D., 1936. Bell Telephone Laboratories, 1936-. Dr. 

 Pierce has been engaged in the study of vacuum tubes. 



W. ScHOCKLEY, B.Sc, California Institute of Technology, 1932; Ph.D., 

 Massachusetts Institute of Technology, 1936. Bell Telephone Laboratories, 

 1936-. Dr. Shockley's work in the Laboratories has been concerned with 

 problems in solid state physics. 



Elizabeth A. Wood (Mrs. Ira E.), A.B., Barnard, 1933; M.A., Bryn 

 Mawr, 1934; Ph.D., Bryn Mawr, 1939. Research Assistant, Columbia, 1941. 

 The next year she was awarded a National Research Fellowship and spent 

 two years studying quartz deposits in the United States. Bell Telephone 

 Laboratories, 1943-. Her work has been chiefly in X-ray diffraction, and the 

 X-ray and optical investigation of crystals. Delegate to the Second Interna- 

 tional Congress of Crystallography in Stockholm in 1951. Member of Ameri- 

 can Physical Society, American Crystal lographic Association, the New York 

 Mineralogical Club, Phi Beta Kappa, Sigma Xi; and a Fellow of the Min- 

 eralogical Society of America. 



