Contributors to this Issue 



C. H. Amauon, B.S., Biltmore School of Forestry, 1908. Forester, 

 Great Northern Paper Company, Maine, 1909-11 ; Forest Engineering, 

 1912-17; Western Electric Company, Inspection Department, 1918- 

 24; Bell Telephone Laboratories, 1925 . Mr. Amadon has been en- 

 gaged in development work in connection with timber engineering, 

 timber utilization, and specification problems. 



F. M. Bronson, Walton (N. Y.) Telephone Company, 1898-1902. 

 New England Telephone and Telegraph Company, Engineering 

 Department, 1902-04; Traffic Department, 1904-10. American 

 Telephone and Telegraph Company, Department of Operation and 

 Engineering, 1910-. Mr. Bronson has been engaged chiefly in work 

 relating to methods and arrangements for handling toll traffic. He is 

 now a Bell System representative in Washington, D. C. 



R. H. CoLLEY, A.B., Dartmouth College, 1909; A.M., Harvard 

 University, 1912; Ph.D., George Washington University, 1918 

 Austin Teaching Fellow in Botany, Harvard University, 1910-12 

 Instructor in Botany, Dartmouth College, 1909-10 and 1912-16 

 Pathologist, Division of Forest Pathology, Bureau of Plant Industry, 

 U. S. Department of Agriculture, 1916-28. Bell Telephone Labora- 

 tories, 1928-. Dr. Colley has been engaged in specification studies 

 for poles and pole preservation research. 



W. H. DoHERTY, S.B. in Electrical Communication Engineering, 

 Harvard University, 1927; S.M. in Engineering, 1928. American 

 Telephone and Telegraph Company, Long Lines Department, 1928. 

 Research associate, radio section, U. S. Bureau of Standards, 1928-29. 

 Bell Telephone Laboratories, 1929-. Mr. Doherty has been con- 

 cerned with the development of high-power radio transmitters. 



L. P. Ferris, B.A., University of Colorado, 1908; B.S. in Electrical 

 Engineering, Massachusetts Institute of Technology, 1911. American 

 Telephone and Telegraph Company, Engineering Department, 1911- 

 19; Department of Development and Research, 1919-34, where he 

 worked on inductive interference, crosstalk and measuring problems. 

 Bell Telephone Laboratories, 1934-. As Inductive Coordination 

 Engineer, Mr. Ferris has been concerned with questions as to the 



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