40 BELL SYSTEM TECHNICAL JOURNAL 



Fig. 11a— Formulas (30), (32), (33), (34); Precision 5. 



i?! = 663 ohms, C 2 = 1.063xl0- 6 farad, C 3 = 1.300xl0" 6 farad, 

 R 3 = 1326 ohms. 



Fig. lib— Formulas (30), (35), (36), (37); Precision 5. 



i?i = 663 ohms, C 4 = 2.362xl0- 6 farad, C 5 = 1.932xl0- 6 farad, 



iv 5 = 401 ohms. 



Note: — To furnish sufficiently high precision for most engineering applications 

 the curves and the cross-section lines in the line-impedance charts would evidently 

 have to be drawn at much closer intervals than has been done in the present paper, 

 where the purpose of the charts is mainly qualitative, or only roughly quantitative, 

 to exhibit the general nature of the functions involved. 



