178 BELL SYSTEM TECHNICAL JOURNAL 



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. Engineering Depart- 

 ment, Western Electric Company, 1920-25. Bell Telephone Labora- 

 tories, 1925-. Mr. Thuras has been engaged in studies and develop- 

 ment of electro-acoustic devices and instruments. 



