Contributors to this Issue 



R. M. BozoRTH, A.B., Reed College, 1917; U. S. Army, 1917-19; 

 Ph.D. in Physical Chemistry, California Institute of Technology, 1922; 

 Research Fellow in the Institute, 1922-23. Bell Telephone Labora- 

 tories, 1923-. As Research Physicist, Dr. Bozorth is engaged in 

 research work in magnetics. 



W. P. Mason, B.S. in Electrical Engineering, University of Kansas, 

 1921 ; M.A., Columbia University, 1924; Ph.D., 1928. Bell Telephone 

 Laboratories, 192 1-. Dr. Mason has been engaged in investigations 

 on carrier systems and in work on wave transmission networks both 

 electrical and mechanical. He is now head of the department investi- 

 gating piezoelectric crystals. 



H. Nyquist, B.S. in Electrical Engineering, North Dakota, 1914; 

 M.S., North Dakota, 1915; Ph.D., Yale, 1917. Engineering Depart- 

 ment, American Telephone and Telegraph Company, 1917-19; Depart- 

 ment of Development and Research, 1919-34; Bell Telephone Labora- 

 tories, 1934-. Dr. Nyquist has been engaged in transmission work, 

 particularly telegraph transmission. He is at present Engineer of 

 Transmission Theory. 



K. W. Pfleger, A.B., Cornell University, 1921 ; E.E., 1923. Ameri- 

 can Telephone and Telegraph Company, Department of Development 

 and Research, 1923-34; Bell Telephone Laboratories, 1934-. Mr. 

 Pfleger has been engaged in transmission development work, chiefly on 

 problems pertaining to delay equalization, delay measuring, tempera- 

 ture effects in loaded-cable circuits, and telegraph theory. 



D. K. Gannett, B.S. in Engineering, University of Minnesota, 1916; 

 E.E., University of Minnesota, 1917. American Telephone and Tele- 

 graph Company, Engineering Department, 1917-19; Department of 

 Development and Research, 1919-34. Bell Telephone Laboratories, 

 1934-. As Toll Transmission Engineer, Mr. Gannett is concerned 

 principally with the transmission features of toll systems, particularly 

 program systems, toll signaling systems, and vacuum tube applications 

 in these and other systems. 



Earle E. Schumacher, B.S., University of Michigan; Research 

 Assistant in Chemistry, 1916-18. Engineering Department, Western 



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