Contributors to this Issue 



E.4RLE E. Schumacher, B.S., University of Michigan; Research Assistant 

 in Chemistry, 1916-18. Engineering Department, Western Electric Com- 

 pany, 1918-25; Bell Telephone Laboratories, 1925-. As Research Metal- 

 lurgist, Mr. Schumacher is in charge of a group concerned with research and 

 development studies on metals and alloys. 



Thomas Shaw, S.B., Massachusetts Institute of Technology. American 

 Telephone and Telegraph Company, Engineering Department, 1905-19; 

 Department of Development and Research, 1919-33. Bell Telephone* 

 Laboratories, 1934-. As Loading Engineer, Mr. Shaw has been chiefly con- 

 cerned with development problems in loading telephone circuits, including 

 transmission and economic aspects of the loading apparatus. 



Alexander G. Soudex, Massachusetts Institute of Technology, B.S. 

 1929; M.S. 1930. Bell Telephone Laboratories, 1930-. Mr. Souden has 

 bfen engaged principally in metallurgical investigations of non-ferrous alloys, 

 magnetic powder cores, and varistors. 



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