OP ARTS AND SCIENCES. 



245 



Table VI. and Figure 6 show the result of a similar series of 

 measurements with the diaphragm at a distance of ^f ^ inch from the 

 core. Here the first maximum of the excursion is attained with a 

 magnetizing current of about 100 milliamperes. 



TABLE VI. 



Series XXIII. 



Line Current = 1.40 milliamperes. 



With the diaphragm at a distance of j^-g inch from the core, the 

 values for the excursion given in Table VII. were obtained. These 

 are shown graphically in Figure 7. Here the final rise of the curve 

 has begun even with the lowest magnetizing force employed. 



Magnetizing Current. 

 61 

 51 



TABLE VIL 



Series XXV. 

 Line Current = 1.26 milliamperes. 



Excursion. 

 26 

 18 



Magnetizing Current. Excursion. 

 39. 10 



28 7 



Series XXVL 



Line Current — 2.25 milliamperes. 

 Magnetizing Current. Excursion. Magnetizing Current. 



61 69 39 



51 48 28 



Excursion. 

 22 

 12 



