Contributors to this Issue 



E. W. Bemis, Worcester Polytechnic Institute, 1919, B.S. in Elec- 

 trical Engineering; Graduate Assistant in Electrical Engineering at 

 Worcester Polytechnic Institute, 1919-1920. American Telephone 

 and Telegraph Company, Department of Operation and Engineering, 

 1920-. Mr. Bemis has been engaged in work on carrier telephone 

 systems, program transmission and public address systems, inductive 

 coordination of power and telephone lines and since 1932 on telegraph 

 engineering with particular reference to its transmission features. 



R. M. Burns, A.B., University of Colorado, 1915; A.M., 1916; 

 Ph.D., Princeton University, 1921; Instructor, University of Colorado, 

 1916-17. Western Electric Company, 1922-25. Bell Telephone 

 Laboratories, 1925- ; Assistant Chemical Director, 1931-. Dr. Burns' 

 work has been largely in the electrochemical field and particularly on 

 the subject of the corrosion of metals and its prevention. 



James A. Carr, B.S. in Electrical Engineering, Virginia Poly- 

 technic Institute, 1919; Graduate Student in Electrical Engineering 

 at Massachusetts Institute of Technology, 1920. American Telephone 

 and Telegraph Company, Development and Research Department, 

 1921-27; Bell Telephone Laboratories, 1927-. Mr. Carr's work has 

 been mostly in aerial line design and maintenance studies. 



B. L. Clarke, B.S., George Washington University, 1921; M.A., 

 Columbia University, 1923; Ph.D., Columbia University, 1924. Bell 

 Telephone Laboratories, 192 7-. Dr. Clarke has been in charge of the 

 work in analytical chemistry since 1930. 



H. W. Hermance, Western Electric Company (Kearny), 1925-27, 

 chemist; Bell Telephone Laboratories, 192 7-. Mr. Hermance orig- 

 inally did general chemical analytical work. Since 1930 he has been 

 in charge of the work in microanalysis. 



A. D. Knowlton, B.S., Haverford College, 1920. W'estern Electric 

 Company, Engineering Department, 1920-24. Bell Telephone Labo- 

 ratories, 1924-. Mr. Knowlton is engaged in the development of 

 telegraph equipment. 



Frederick B. Llewellyn, M.E., Stevens Institute of Technology, 

 1922 ; Ph.D., Columbia University, 1928. Western Electric Company, 



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