302 BELL SYSTEM TECHNICAL JOURNAL 



jacketed cable upon which measurements were made. The incidence 

 of cable currents of various intensities, their rate of attenuation, and the 

 resultant voltages appear to be in satisfactory agreement with theoretical 

 expectations. 



Acknowledgements 



The field observations were made possible by the cooperation of the Long 

 Lines Department of the A. T. and T. Company, and the Southern Bell 

 Telephone and Telegraph Company, both in the installation and the opera- 

 tion of the equipment. The observations were conducted by our associate 

 Mr. D. W. Bodle, who was also responsible for the design of the automatic 

 recording equipment used to measure the rate of strokes to ground, and who 

 suggested, from some of the observ-ations discussed here, the greater in- 

 tensity of early-season storms. 



References 



1. E. D. Sunde: "Lightning Protection of Buried ToU Cable," B. S. T. J., Vol. 24, Apri^ 



1945. 



2. E. D. Sunde: "Earth Conduction Effects in Transmission Systems," D. Van Nostrand 



Company, Inc., New York, London, Toronto, 1949. 



3. C. M. Foust and H. P. Kuehni: "The Surge-crest Ammeter," General Electric Review, 



Vol. 35, December 1932. 



4. C. F. Wagner and G. D. McCann: "New Instruments for Recording Lightning Cur- 



rents," Trans. A. L E. E., Vol. 58, 1939. 



5. W. H. Alexander: "The Distribution of Thunderstorms in the United States^l904- 



\9iy'— Monthly Weather Review, Vol. 63, 1935. 



6. J. H. Hagenguth: "Photographic Study of Lightning," Trans. A. L E. E., Vol. 66, 



1947. 



7. F. A. Berry, E. Bollay and N. R. Beers: "Handbook of Meteorolog>%" McGraw-Hill 



Book Company, Inc., New York and London, 1945. 



