THE BELL SYSTEM 



TECHNICAL JOURNAL 



VOLUMES XXI-XXII 

 (194^-1943) 



Table of Contents 



Volume XXI, 1942. 

 June, 1942 



The Future of Transoceanic Telephony — Oliver E. Buckley 1 



Diamond Dies for High-Speed Drawing of Copper Wire — H, N. 



Padowicz 20 



Using Double Sampling Inspection in a Manufacturing Plant — D. B. 



Keeling and L. E. Cisne 37 



Entropy — Karl K. Darrow 51 



Volume XXII, 1943 

 January, 1943 



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 . Schelkunof 80 



Memorial to the Classical Statistics — Karl K. Darrow 108 



July, 1943 



A Mineral Survey for Piezo-Electric Materials — W. L. Bond 145 



The Fundamental Equations of Electron Motion (Dynamics of High 



Speed Particles)— L. A. MacColl 153 



Quartz Crystal Applications — W. P. Mason 178 



Methods for Specifying Quartz Crystal Orientation and Their Deter- 

 mination by Optical Means — W. L. Bond 224 



A Note on the Transmission Line Equation in Terms of Impedance — 



/. R. Pierce 263 



iii 



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