336 



H. XAGAOKA. 



niineîik'il in this positùju. It was then slid into a magnetizing coi], 

 and its extremities firmly clamped to the twisting apparatus. The 

 magnetizing current was gradually increased l)y means of the liquid 

 slide, and then slowly remoyed. Thereupon the deflection of the 

 magnetometer mirror with corresponding angle of twist was read. 

 The following table giyes the changes produced on the permanent 

 masfnetism in arbitrary scale unit, the amount of permanent maof- 

 netism being proportional to tlie numl)er of scale diyisions when the 

 twist is zero. 



