VOLUME XX JANUARY, 1941 number i 



THE BELL SYSTEM 



TECHNICAL JOURNAL 



DEVOTED TO THE SCIENTIFIC AND ENGINEERING ASPECTS 

 OF ELECTRICAL COMMUNICATION 



Single Sampling and Double Sampling Inspection Tables 



—H. F. Dodge and H, G. Romig 1 



Television Transmission Over Wire Lines 



—M. E. Sirieby and J. F. Wentz 62 



Insulation of Telephone Wire with Paper Pulp 



—J, S. Little 82 



Design and Operation of New Copper Wire Drawing Plant: 



Part I— Design and Operation of High Speed Copper 

 Wire Drawing Machines — H. Blount 95 



Part n— Equipping and Operating the New Wire Mill 



— /. E. Wiltrakis 111 



Abstracts of Technical Articles by Bell System Authors • 125 



Contributors to this Issue 129 



AMERICAN TELEPHONE AND TELEGRAPH COMPANY 



NEW YORK 



50c per copy $1.50 per Year 



