VOLUME XXIII OCTOBER, 1944 number 4 



THE BELL SYSTEM 



TECHNICAL JOURNAL 



DEVOTED TO THE SCIENTIFIC AND ENGINEERING ASPECTS 

 OF ELECTRICAL COMMUNICATION 



The Conquest of Distance by Wire Telephony 



Thomas Shaw 337 



Some Aspects of Powder Metallurgy 



Earle E. Schumacher and Alexander G. Souden 422 



Abstracts of Technical Articles by Bell System Authors 458 

 Contributors to this Issue 460 



AMERICAN TELEPHONE AND TELEGRAPH COMPANY 



NEW YORK 



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