RESEA HOHES ON MAGNETOSTRICTION. 



391 



pressure on the magnetization of iron, there ;ire no serious dis- 

 crepancies between theory and experiment. In default of a more 

 perfect theory, it will be of no small interest to see how far the 

 aforesaid theory can explain (he correlation of strain and stress in 

 magnetization ; Ave intend to continue our investigations into the 

 Wiedemann effect, and see to what extent the mutual relations between 

 the strain due to magnetization and the effects of stress on the 

 magnetization can be traced. 



