VOLUME xxii JANUARY, 1943 number i 



^^ Public Library 



THE BELL S^F^Wm 



TECHNICAL JOURNAL 



DEVOTED TO THE SCIENTIFIC AND ENGINEERING ASPECTS 

 OF ELECTRICAL COMMUNICATION 



The Mathematics of the Physical Properties of Crystals 



—Walter L. Bond 1 



The Metallurgy of Fillet Wiped Soldered Joints 



—E. E. Schumacher, G. M. Bouton and G. S. Phipps 73 



A Mathematical Theory of Linear Arrays 



—S. A. Schelkunoff 80 



Memorial to the Classical Statistics . . . Karl K, Darrow 108 



Abstracts of Technical Articles by Bell System Authors . 136 



Contributors to this Issue 143 



AMERICAN TELEPHONE AND TELEGRAPH COMPANY 



NEW YORK 



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