484 



Mr. L. Southerns on the 



, 1 



If y —n is positive, Sj, increases with k 2 or W. This con- 

 dition roughly indicates that the fibres must be inclined 

 sufficiently to the vertical to cause always a divergent force 

 on the pointer. 



A curve obtained by loading the fibres of the Curie 

 balance is given in fig. 6. It should be part of a rectangular 



Fig. 6 



X+2 X+4 x+5 



Load on Fibres. 



«-4--> 



o 



o, 



Fi>. 7. 



h. 



hyperbola in the left-hand upper quadrant. A finite load of 

 this kind will produce infinite sensitiveness. From (5) and 



JhV 



(6) we may easily show that this will occur when Ic 2 = r. 



