Index to Volume XXXI 

 A 



Adniillanco 



Inipochince Bridj^cs for the Megacycle Range, //. T. Wilhelm, jiagcs OW 1012. 

 Alphahrts 



A Comparison of Signalling Alphal)els, K. X. Gilbert, ])ages 504-522. 

 Anderson, A. E., Transistors in Switching Circuits, pages 1207-1249. 

 Application of Boolean Algebra to Switching Circuit Design, N. E. Slaehler, pages 280-305. 

 Armatures, Relay 



Relay Armature Rebound Analysis, E. E. Sunnier, ])ages 172-200. 

 Automatic Switchmg for Nationwide Telephone Service, .1. B. Clnrk and II. S. Osborne, 



pages 823-831. 

 Automatic Toll Switching S}stems, /'". /■". Shipley, pages 860-882. 



B 



Baker, W . 0. and Heiss, J. //., Interaction of Polymers and Mechanical Waves, pages 



306-356. 

 Barium Titanate 



New Techniques for Measuring P'orces and Wear in Telephone Switching Apparatus, 

 W. P. Mason and S. D. While, pages 469-503. 

 Bridges, Impedance 



Impedance Bridges for the Megacycle Range, H. T. Wilhelm, pages 999-1012. 



C 



Cables. Sheaths and Sheath Losses 



Principal Strains in Cable Sheaths and Other Buckled Surfaces, /. L. Hopkins, pages 

 523-529. 

 Carrier Telegraph System for Short-Haul Applications, J. L. Hysko, W . T. Rea and L. C. 



Roberts, pages 666-687. 

 Circuits, Switching 



An Application of Boolean Algebra to Switching Circuit Design, R. E. Slaehler, i)ages 

 280-305. 

 Circuits, Traveling-Wave-Tube 



Pro]:)agation Studies at Microwave Frequencies by Means of Very Short Pulses, 

 0. E. DeLange, pages 91-103. 

 Circuits, Trigger-Type 



Transistors in Switching Circuits, .4. E. Anderson, pages 1207-1249. 

 Clark, A. B. and Osborne, H. S., Automatic Switching for Nationwide Telejjhone Service, 



pages 823-831. 

 Clos, Charles and Wilkinson, R. I., Dialing Habits of Telci)hone Customers, pages 32-67. 

 Coding, Communication 



Efficient Coding, B. M. Oliver, pages 724-750. 

 Coils, Relay 



Important Design Factors Influencing Reliability of Relays, J. R. Fry, ])ages 976-998. 

 Common Control Telephone Switching Systems, Oscar Myers, pages 1086-1120. 

 Communication Theory 



Efficient Coding, B. M. Oliver, pages 724-750. 

 Comparison of Signalling Alphabets, E. N. Gilbert, pages 504-522. 

 Computers 



Selective Fading of Microwaves, A. B. Crawford and W. C. Jakes, Jr., pages 68-90. 

 Contacts 



A New General Purpose Relav for Telephone Switching Systems, .1 . C. Keller, jiagcs 

 1023-1067. 



Important Design Factors Inlluencing Reliability of Relays, /. R. Fry, pages 976-998. 



