OF 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 5 f B 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. 



Magnetizing Current. Excursion. 



291 15 



278 9 



202 6 

 243 45 

 230 5.5 



203 9 



Magnetizing Current. 

 338 

 330 

 320 

 305 

 285 

 260 

 235 

 218 



Series XXIV. 

 Line Current — 1 65 milliamperes. 



Excursion. Magnetizing Current. Excursion. 



47.5 200 20 



35 179 27 



21 150 30 



18 130 35 



16.5 91 37 



17.5 71 •-'! 



18 50 15 

 19 



With the diaphragm at a distance of T £ 5 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. 



TABLE VII. 

 Series XXV. 

 Line Current = 1.26 milliamperes. 

 Magnetizing Current. Excursion. 



61 

 51 



26 

 18 



Magnetizing Current. Excursion 

 39 U> 



28 7 



Series XXVI. 

 Line Current = 2.25 milliamperes. 

 Magnetizing Current. Excursion. 

 61 69 



51 48 



Magnetizing Current. Bxcnrslon 



39 22 



28 12 



