Contributors to this Issue 



Julian Blanchard, A.B., Trinity College (now Duke University), 

 1905; A.M., Columbia University, 1909; Ph.D., 1917. Professor 

 of Engineering, Trinity College, 1909-1912; Research Assistant in 

 Physics, Columbia University, 1912-1915. Physicist, Research Lab- 

 oratory, Eastman Kodak Company, 1915-1917; Engineering Depart- 

 ment, Western Electric Company, 1917-1925; Bell Telephone Labora- 

 tories, 1925-. Dr. Blanchard's work has been concerned primarily 

 with special studies in connection with the development of vacuum 

 tubes and radio. 



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. 



C. J. Davisson, B.Sc, University of Chicago, 1908; Ph.D., Prince- 

 ton University, 1911; Instructor in Physics, Carnegie Institute of 

 Technology, 1911-17. Engineering Department of the Western Elec- 

 tric Company, 1917-25; Bell Telephone Laboratories, 1925-. As 

 Research Physicist, Dr. Davisson is engaged in work relating largely 

 to thermionics and electronic physics. 



In 1928 the National Academy of Sciences awarded the Comstock 

 Prize to Dr. Davisson "for the most important discovery of or investi- 

 gation in electricity or magnetism or radiant energy" made in this 

 country during the preceding five years, for his work in this field. 

 In 1931 he and Dr. L. H. Germer received the ElHott Cresson Medals 

 from the Franklin Institute, Philadelphia, and in 1935 he received 

 the Hughes Medal of the Royal Society of London. 



W. G. GusTAFSON, B.S. in Electrical Engineering, Union College, 

 1927; Columbia University, 1929-36. Bell Telephone Laboratories, 

 1927-. Mr. Gustafson is engaged in work relating to the development 

 of transformers and repeating coils for communication purposes. 



W. Herriott was engaged in astronomical research at the Allegheny 

 Observatory from 1914 to 1917. Research in astronomical and aerial 

 photography at the Research Laboratories of the Eastman Kodak 

 Company followed from 1917 to 1920. Between 1920 and 1925 he 



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