THE 15ELL SYSTEM TECHNICAL JOURNAL 



PUBLISHED SIX TIMES A ^ K A K IJ V T H E 



A M E U I G A N TELEPHONE AND T K L E (; li A P 11 COMPANY 



195 B R O A D WAY, NEW Y O K K 7, N. Y. 



CLEO F. CRAIG, President 



CARROLL O. BICKELHAUPT, Secretary 



DONALD R. BELCHER, Treasurer 



EDITORIAL BOARD 



F. R. KAPPEL O. E. BUCKLEY 



H. S. OS B O R N E M. J. K E L LY 



J. J. P 1 L L I O D A. B. C L A R K 



R. BOWN D. A. QUARLES 



F. J. FE E LY 



PHILIP C.JONES, Editor 

 M. E. STRIEBY, Managing Editor 



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