692 BELL SYSTEM TECHNICAL JOURNAL 



engaged in articulation testing studies and investigations of speech and 

 music quality. 



A. L. Thuras, B.S., University of Minnesota, 1912; E.E., 1913. 

 Laboratory assistant with U. S. Bureau of Standards, 1913-16. 

 Graduate student in physics, Harvard, 1916-17. Bell Telephone 

 Laboratories, 1920-. At the Laboratories, Mr. Thuras has worked on 

 the study and development of electro-acoustic devices and instruments, 



E. C. Wente, A.B., University of Michigan, 1911 ; S.B. in Electrical 

 Engineering, Massachusetts Institute of Technology, 1914; Ph.D., 

 Yale University, 1918. Engineering Department, Western Electric 

 Company, 1914-16 and 1918-24; Bell Telephone Laboratories, 1924-. 

 As Acoustical Research Engineer, Mr. Wente has worked principally 

 on general acoustic problems and on the development of special types 

 of acoustic devices. 



R. L Wilkinson, B.Sc, Iowa State College, 1924; Western Electric 

 Company, 1920-21; American Telephone and Telegraph Company, 

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

 has studied principally the application to telephone problems of the 

 mathematical theory of probability, including sampling and statistical 

 analysis. 



