226 Proceedings of Indiana Academy of Science 
100 mil. amp. 200 mil. amp. 
390 meters oll 14 
‘ 375 meters 10 15 
375 meters * fee 15 
348 meters SLI} .14 
310 meters SP: 14 Average 0,;=.126 
Decrement of decremeter with resistance introduced to reduce the current 
from 200 to 100 milliamperes. 
100 milliamperes 375 meters 
20; 24 
.26 al 
Average °,=.127 
Decrement of decremeter with damped wave 375 meters. 
D.=2d,+d=.36 
Di =d,+d=.23 
DD i—d— ale 
Second: 
D,=2d,+d= .38 
D,+d,4+d= .24 
D— pi ay— ale 
Thus it is shown that the above method of determining the decremnet 
of a decremeter checks fairly well with the CW. method. 
Indiana University. 
