Circular Magnetization on Magnetized Iron Wire. 431 



ten times. The curves are all drawn for the same tempe- 

 rature, viz. 18° C, and the current in the wire is indicated in 

 each case. The correction-line for the length of the specimen 

 is also drawn. 



Method of Deducing the Temperature- Curves (fig. 4). 



By compounding the ordinates of the curves in fig. 3 with 

 the corresponding value of the average circular intensity, the 

 set of resultant I and H curves (b) at constant temperature 

 for comparison with the corresponding set (a) at different 

 temperatures was obtained. These two sets of curves are not 

 shown in the figures. They were only a step in the reduction, 

 and were not intrinsically interesting. 























































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Temp, /n Degrees Cent". 



Effect of Temperature on the Magnetization of Iron in High Fields. 



The final result showing the effect of temperature in high 

 fields is shown in fig. 4. Here ordinates represent average 

 resultant intensity and abscissa? temperature in degrees centi- 

 grade. Each curve is drawn for a constant average resultant 

 field. 



