THE BELL SYSTEM 



TECHNICAL JOURNAL 



VOLUME XV, 1936 

 Table of Contents 



JANUARY, 1936 



Long-Wave Radio Transmission Phenomena Associated with a 

 Cessation of the Sun's Rays — 



Austin Bailey and A. E. Harper 1 

 The Corrosion of Metals — I. Mechanism of Corrosion Processes — 



R. M. Burns 20 

 Magnetic Measurements at Low Flux Densities Using the Alter- 

 nating Current Bridge — Victor E. Legg 39 



The Present Status of Ferromagnetic Theory — R. M. Bozorth 63 



Some Equivalence Theorems of Electromagnetics and Their 



Application to Radiation Problems — 5. A. Schelkunoff 92 



Magnetic Alloys of Iron, Nickel, and Cobalt— G. W. Elmen 113 



Improvements in Communication Transformers — ■ 



A. G. Ganz and A. G. Laird 136 

 Technical Digests — - 



1. Measurement of Telephone Noise and Power Wave 



Shape—/. M. Bar stow, P. W. Blye and H. E. Kent 151 



2. On the Correlation of Radio Transmission with Solar 



Phenomena— v4. M. Skellett 157 



3. Eclipse Effects in the Ionosphere — 



/. P. Schafer and W. M. Goodall 162 



4. Earth Resistivity and Geological Structure — R. H. Card. . 167 



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