BABBITT. — THE VON WALTENHOFEN PHENOMENON. 



255 



Amperemeter Reading. 

 1.218 



Ballistic Throw. 

 20.81 



A repetition of the process yielded the following : 



Amperemeter Reading. Ballistic Throw. 



1.219 20.82 



The iron was demagnet- 

 ized by the transformer. 



Test of Ballistic Galvan- 

 ometer. 



Amperemeter 

 Reading. 



13.78 



Ballistic 

 Throw. 



21.54 



The iron was demagnet- 

 ized by the transformer and 

 the field built up in two 200 

 steps : 



o 



cc 



I 



< 



1901 



REVERSALS 



10 



Figure 18. Set VI: B 19,300: first mag- 

 netization; O indicates 1-step reversals; X 

 6-step reversals. 



The iron was demagnetized by the transformer. 



Test op Ballistic Galvanometer. 



Ballistic Throw. 

 21.48 



The iron was demagnetized by the transformer and the field built 

 up in three steps : 



Amperemeter Reading. Ballistic Throw. 

 0.484 8.44 



0.757 7.55 



1.219 4.45 



Amperemeter Reading. 



13.75 



