iSETWEEN LONGITUDINAL AND CIECüLAß MAGNETIZATIONS. oOl 



after given. The large incrense of magnetization in the weak 

 field noticed in the preceding experiment is to be explained 

 partly by the difterence in the behaviour of the longitudinal and 

 circular magnetization. The difterence in tlie decreases of mag- 

 netizations in longitudinal and transverse directions in strong- 

 fields is also due to the cause just mentioned as well as to the 

 absence of demagnetizing force in the transverse direction. 



Villari only observed increase of magnetization in the trans- 

 verse direction by applying axial magnetizing fields, because 

 his fields were too Aveak. Thus the effect of longitudinal field on 

 circular magnetization is the same as that of circular field on 

 longitudinal magnetization. 



4. Nickel Tube. 

 The change of magnetization in longitudinal direction due to 

 transverse field was examined by the maguetometric method as was 

 done with the iron tube. The results are given in the follow- 

 ing table and in Fig. 10. 



TABLE IX. 



