Lines in Telephonic Transmission, 



329 



addition the articulation was clearer and sharper. In addition 

 to this the side tone at the transmitting end was reduced so 

 as to be hardly noticeable, so that the resuit of loading was 

 to increase the receiving-end current while decreasing the 

 sending-end current. Tests were made upon different lengths 

 of the loaded cable and the results of one set of tests are 

 shown in the accompanying diagram (fig. 4). The results were 



Fur. 4. 



represented fairly well by a straight line which corresponds 



to the approximate formula (17). This line shows that the 

 initial loss was equivalent to nine miles of standard cable, 

 but on account of the greatly reduced attenuation, the loaded 



