IHE BELL SYSTEM 



Jechnical journal 



VOTED TO THE SC I E N T I FIC^^^ AND ENGINEERING 

 PECTS OF ELECTRICAL COMMUNICATION 



LUME XXXV MARCH 1956 NUMBER 2 





An Experimental Remote Controlled Line Concentrator \.f^ y 



A^E. JOEL, JR. 249 



Transistor Circuits for Analog and Digital Systems 



F. H. BLECHER 295 



Electrolytic Shaping of Germanium and Silicon a. uhlir, jr. 333 



A Large Signal Theory of Traveling-Wave Amplifiers p. k. tibn 349 



A Detailed Analysis of Beam Formation with Electron Guns of the 

 Pierce Type w. e. danielson, j. l. rosenfeld and j. a. saloom 375 



Theories for Toll Traffic Engineering in the U.S.A. r. i, Wilkinson 421 



Crosstalk on Open -Wire Lines 



W, C, BABCOCK, ESTHER RENTROP AND C. S. THAELER 515 



Bell System Technical Papers Not Published in This Journal 519 



Recent Bell System Monographs 527 



Contributors to This Issue 531 



COPYRIGHT 1956 AMERICAN TELEPHONE AND TELEGRAPH COMPANY 



