18 



ART. 6. — K. HONDA AND S. SHIMIZU. 



tungsten steel up to 8000 C.G.S. ; and lastly for Swedish iron, 

 it fails beyond an induction of 18000 C.G.S. If, however, the 

 specimens are cooled in liquid mr, the applicable range of the 

 law for induction is notably extended, as may be seen from 

 Fig. 1. 



As regards the residual magnetism, the cooling always increases 

 it in a marked degree. 



(d) Hysteresis-loss in Nickel Steels. 



The hysteresis of nickel steels was studied at ordinary tem- 

 perature, and seven of them at liquid air temperature. The 

 results are given in Table IV and in Fig. 2 a, b. 



TABLE IV. 

 NICKEL STEELS. 



