BETWEEN LONGITUDINAL AND CIRCULAK ilAGNETTZATIONS. 295 



TABLE V. 



The magnetizing fields are not the same for these two eases, 

 so that we can not find an exact coincidence between the corres- 

 ponding vaines of o I, bnt we observe at the same time that the 

 coincidence must become closer, if H were the same in tliese 

 two cases. From tbis and other results, I find that the effect of 

 heating of the transverse magnetizing coil is not sensible in the 

 case of iron. 



Using the magnetometric method, I next examined the 

 change of longitudinal magnetization by altering the order of 

 magnetizations. The tube whs first placed in a constant circular 

 nuignetizing field, and then magnetized longitudinally from zero 

 field up to 18 C.G.S. units. The results are given in the follow- 

 ing table and in Fig. 8. 



