EuTHERFORD. — Oil Magnetic Viscosity. 



191 



to that magnetizing force is proportional to the area of the 

 curve inckided between the axes, the curve X A, and the 

 abscissa drawn through the point. 



The values of B and H for any point may thus be deter- 

 mined. 



The ordinates of the curve B B are drawn proportional to 

 the induction, and the abscissas to the magnetizing force. 



From the curve 2 (BB) curve 5 is plotted, showing the 

 relation between B and H for the rapid cycle. The static 

 ballistic curve is drawn alongside for comparison. 



