154 BELL SYSTEM TECHNICAL JOURNAL 



L. J. SiviAN, A.B., Cornell University, 1916; Engineering Depart- 

 ment, Western Electric Company, 1917-19 and 1920-25; Bell 

 Telephone Laboratories, 1925-. Mr. Sivian's work is in acoustics, 

 chiefly in connection with methods of electroacoustic measurements. 



George C. Southworth, B.S., Grove City College, 1914, M.S., 

 1916; Ph.D., Yale, 1923; assistant physicist. Bureau of Standards, 

 1917-18; instructor, Yale University, 1918-23; Information De- 

 partment, American Telephone and Telegraph Company, 1923-24; 

 Department of Development and Research, 1924-. Mr. South- 

 worth's work in the Bell System has been concerned chiefly with 

 the development of short-wave radiotelephony. He is the author of 

 several papers on radio-frequency phenomena. 



