iv bell system technical journal 



October, 1943 



Effect of Feedback on Impedance — R. B. Blackman 269 



Design of Two-Terminal Balancing Networks — K. G. Van Wynen. . . . 278 

 Use of X-Rays for Determining the Orientation of Quartz Crystals 



— W. L. Bond and E. J. Armstrong 293 



Raw Quartz, Its Imperfections and Inspection — G. W. Willard 338 



The New Statistical Mechanics — Karl K. Darrow 362 



Review of S. A. Schelkunofl's Book — 



Electromagnetic Waves — P. Le Corbeiller 393 



