Contributors to this Issue 



S. E. Anderson, B.S. in E. E., University of Michigan, 1919; 

 Electrical Research Laboratory, General Motors Corporation, Detroit, 

 1919-20; Engineering Department, Western Electric Company, 

 1920-24; Bell Telephone Laboratories, 1925—. Mr. Anderson has 

 been engaged in the dexelopment of carrier systems and radio receiv'^ers. 



John R. Carson, B.S., Princeton, 1907; E.E., 1909; M.S., 1912; 

 Research Department, Westinghouse Electric and Manufacturing 

 Company, 1910-12; instructor in physics and electrical engineering, 

 Princeton, 1912-14; American Telephone and Telegraph Company, 

 Engineering Department, 1914-15; Patent Department, 1916-17; 

 Engineering Department, 1918; Department of Development and 

 Research, 1919 — . Mr. Carson's work has been along theoretical lines 

 and he has published many papers on theory of electric circuits and 

 electric wave propagation. 



E. T. HocH, B.S., in Electrical Engineering, Case School of Ap- 

 plied Science, 1914; Western Electric Company, Manufacturing and 

 Installation Department, 1914-15; Engineering Department, 1915- 

 24; Bell Telephone Laboratories, Inc., 1925 — . 



F. C. Willis, B.Sc, London University, 1911; Engineering De- 

 partment of the Western Electric Company, 1913-14; 1919-24; 

 British Army, 1914-19; Bell Telephone Laboratories, 1925—. Mr. 

 Willis was formerly engaged on design of radio apparatus and now 

 on line and transmission testing apparatus. 



L. E. Melhuish, B.Sc, Pennsylvania State College, 1919; En- 

 gineering Department of the Western Electric Company and Bell 

 Telephone Laboratories, 1919 — . Mr. Melhuish has been employed 

 on apparatus design relating to telephone repeaters, loud speaking 

 systems and associated apparatus. 



Walter A. Shewhart, A.B., Lniversity of Illinois, 1913; A.M., 

 1914; Ph.D., University of California, 1917; Engineering Department, 

 Western Electric Company, 1918-24; Bell Telephone Laboratories, 

 Inc., 1925 — . Mr. Shewhart is making a special study of the applica- 

 tion of probability theories to inspection engineering. 



660 



