VOLUME XrV APRIL, 1935 NUMBER 2 



THE BELL SYSTEM 



TECHNICAL JOURNAL 



DEVOTED TO THE SCIENTIFIC AND ENGINEERING ASPECTS 

 OF ELECTRICAL COMMUNICATION 



Cable Crosstalk — ^Effect of Non-Uniform Current Dis- 

 tribution in the Wires — 



R. N. Hunter and R, P. Booth 179 



Experiments with Directivity Steering for Fading Re- 

 duction — E. Bruce and A. C. Beck 195 



A General Theory of Electric Wave Filters— fT. W. Bode 211 



Ideal Wave Filters— /f. W, Bode and R. L. Dietzold . 215 



Ultra-Short-Wave Propagation: Mobile Urban Trans- 

 mission Characteristics — 



C. R. Burrows, L. E. Hunt and A. Decino 253 



An Application of Number Theory to the Splicing of 

 Telephone Cables — H. P. Lawther, Jr 273 



Contemporary Advances in Physics, XXIX — The 



Nucleus, Fourth Part — Karl K. Darrow .... 285 



Ferromagnetic Distortion of a Two-Frequency Wave — 



Robert M. Kalb and William R. Bennett 322 



Abstracts of Technical Papers 360 



Contributors to this Issue 366 



AMERICAN TELEPHONE AND TELEGRAPH COMPANY 



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