Contributors to this Issue 



Bancroft Ghkrardi, M.E., IM.IVI.E., Cornell Iniversity. Kn^\- 

 neering assistant, 1895-09; traffic engineer, 1899, New York Tele- 

 phone Company; chief engineer, Xew York and New Jersey Telephone 

 Company, 1900-06; assistant chief engineer. New York Telephone 

 Compan\', and New York and New Jersey Telephone Company, 

 1906-07; equii)ment engineer. American Telephone and Telegraph 

 Company, 1907-09; engineer of plant, 1909-18; acting chief engineer, 

 1918-19; chief engineer, 1919 20; vice-president and chief engineer, 

 1920 — . Mr. Gherardi's work in the field of telephony is too well 

 known to require comment. 



Robert W. King, A.B., Cornell University, 1912; Ph.D., 1915; 

 assistant and instructor in physics, Cornell, 1913-17; Engineering 

 Department of the Western Electric Company, 1917-20; Depart- 

 ment of Development and Research, American Telephone and Tele- 

 graph Company, 1920-21; Information Department, 1921 — . 



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

 1914; Ph.D., University of California, 1917; Engineering Depart- 

 ment, Western Electric Company, 1918-24; Bell Telephone Labora- 

 tories, Inc., 1925 — . Mr. Shewhart has been engaged in the study of 

 the relationship between the microphonic and physicochemical prop- 

 erties of carbon. 



Harvey Fletcher, B.S., Brigham Young, 1907; Ph.D., Chicago, 

 1911; instructor of physics, Brigham Young, 1907-08; Chicago. 

 1909 10; Professor, Brigham Young, 1911 16; Engineering Depart- 

 ment, Western Electric Company, 1916-24; Bell Telephone Labora- 

 tories, Inc., 1925 — . During recent years. Dr. Fletcher has conducted 

 extensive investigations in the fields of speech and audition. 



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

 Research Department, Westinghouse Electric and Manufacturing 

 Company, 1910-12; instructor of 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 wa\'e propagation. 



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