between longitudinal and ciliculall magnetizations. 293 



3. Larger Iron Tube. 



I first studied tlie behaviour of the tube b}^ the uiagnetometric 

 method. Tlie magnetizing coil was well compensated, and the 

 tube fixed in the central line of the coil ; then closing both ends 

 of the coil with cork, cold water was kept constantly flowing in 

 the interspace. 



The effect of transverse field on the intensity of magnetiza- 

 tion in longitudinal direction is given in the following table and 

 Figs. 6 and 7. 



TABLE IV. 



Here H and I have the same meanings as before, and h 



denotes the transverse magnetizing field. 



