Contributors to This Issue 



B. S. Biggs, B.A., Southwest Texas Teachers College, 1927; M.A., Uni- 

 versity of Texas, 1931, Ph.D., 1933; Civil Research Laboratory, Carnegie 

 Institute of Technology, 1933-1936. Bell Telephone Laboratories, 1936-. 

 With the Laboratories he has worked chiefly on the synthesis of wood pre- 

 servatives, on dielectric materials and on other phases of organic chemistry. 

 He is a member of the American Chemical Society and of Sigma Xi. 



G. T. Ford, B.S., Michigan State College, 1929; M.A., Columbia, 1936. 

 Bell Telephone Laboratories, 1929-. With the Laboratories he has worked 

 on gas tubes, thermistors, general vacuum tube development, and electron 

 tubes for broad band amplifiers. He is a member of the Institute of Radio 

 Engineers. 



R. W. Frus, B.E.E., University of Minnesota, 1930. Bell Telephone Labo- 

 ratories, 1930-. With the Laboratories Mr. Friis has been concerned with 

 transoceanic and ship-to-shore radio telephone, fire-control radio trans- 

 mitters, and the microwave radio -relay system. He is a Senior Member of 

 the Institute of Radio Engineers. 



J. C. LoziER, B.A., Columbia, 1934. R.C.A. Mfg. Co., 1935-1936. Bell 

 Telephone Laboratories, 1936-. Mr. Lozier's work with the Laboratories 

 has been principally transmission development for radio and carrier tele- 

 phone systems, the theory and design of servomechanisms, and the theory 

 of feedback systems such as compandors and regulators. He is a Senior 

 Member of the Institute of Radio Engineers. 



R. C. Prim, III, B.S.E.E., University of Texas, 1941; M.A. and Ph.D., 

 Princeton, 1949. General Electric Company, 1941-44; Naval Ordnance 

 Laboratory, 1944-49. Bell Telephone Laboratories, 1949-. Here his work 

 has been chiefly mathematical research on non-linear partial differential 

 equations and as a consultant on military projects. Dr. Prim is a member 

 of the Amer. Math. Soc, the Amer. Phys. Soc, Sigma Xi and Tau Beta Pi. 



John Riordan, B.S., Yale, 1923. Amer. Tel. and Tel., 1926-34; Bell 

 Telephone Laboratories, 1934-. With the American Company and subse- 

 quently with the Laboratories, Mr. Riordan has been concerned chiefly with 



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