THE BELL SYSTEM 



TECHNICAL JOURNAL 



VOLUME XXV, 1946 



Table of Contents 

 January, 1946 



Early Fire-Control Radars for Naval Vessels — W. C. Tinus and W. H. C. 



Higgins 1 



The Gas-Discharge Transmit-Receive Switch — A. L. Samuel, J. W. 



Clark and W. W. Mumford 48 



A Wood Soil Contact Culture Technique for Laboratory Study of 



Wood-Destroying Fungi, Wood Decay and Wood Preservation — 



John Lentritz, Jr 102 



X-Ray Studies of Surface Layers of Crystals — E. J. Armstrong 136 



Notes — 



Some Novel Expressions for the Propagation Constant of a Uniform 



Line — J. L. Clarke 156 



Decibel Tables — K. S. Johnson 158 



April, 194<5 



The Magnetron as a Generator of Centimeter Waves — /. B. Fisk, 



H. D. Ilagstrum and P. L. Hartmann 167 



July, 1946 



Some Recent Contributions to Synthetic Rubber Research — C. S. 



Fuller 351 



Characteristics of Vacuum Tubes for Radar Intermediate Frequency 



AmpHfiers — G. T. Ford 385 



High Q Resonant Cavities for Microwave Testing^/. G. Wilson, 



C. W. Schramm and J. P. Kinzer 408 



Techniques and Facilities for Microwave Radar Testing — E. I. Green, 



H. J. Fisher and J . G. Ferguson 435 



ill 



1257'Ji(i5 DEC 1 9 1947 



