254 THE BELL SYSTEM TECHNICAL JOURNAL, JANUARY 1953 



Part VI — Acknowledgements 



This article is the outcome of years of fruitful cooperation with the 

 gas discharge group of Bell Telephone Laboratories, and Dr. J. A. Horn- 

 beck in particular. At one stage of the work I enjoyed the stimulation of 

 Dr. R. W. Hamming who is responsible for all the details of the Monte 

 Carlo calculation. Further acknowledgements are due to Miss C. L. 

 Froelich who carried out the computation of the number in (130), and 

 Miss M. Murray who carried a good share of the burden in the prepara- 

 tion of the manuscript. Finally, I express my thanks to Dr. K. G. McKay 

 for his critical perusal of the manuscript. 



