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 5PECTS OF ELECTRICA L^ClO M>I^U N F C A T I O N 



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)LUME XXXI 11^1^1952-^^1'* NUMBER4 



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Thirtieth Anniversary • , 611 



Lee de Forest and William Shockley DJscuss Electronics 612 

 Network Synthesis Using Tchebycheff PolynomiaTSwies 



SIDNEY DARLINGTON 613 



A Carrier Telegraph System for Short-Haul Applications 



J. L. HYSKO, W. T. REA AND L. C. ROBERTS 666 



The Type-0 Carrier System 



PAUL G. EDWARDS AND L. R. MONTFORT 688 



Efficient Coding b, m. Oliver 724 



Statistics of Television Signals e. r. kretzmer 751 



Experiments with Linear Prediction in Television c. w. harrison 764 

 Generalized Telegraphist's Equations for Waveguides 



S. A. SCHELKUNOFF 784 



Photoelectric Properties of lonically Bombarded SiUcon 



EDWIN F. KINGSBURY AND RUSSELL S, OHL 802 



Abstracts of Bell System Papers Not Published in this Journal 816 



Contributors to this Issue 820 



COPYRIGHT 1952 AMERICAN TELEPHONE AND TELEGRAPH COMPANY 



