54 



AET. 4. — K. HONDA AND T. TEEADA. 



44. The curve was obtained after several cyclic changes of the 

 field. 



23.6 »o, 26.649^ and 24.04^ Nickel Steels. 



Figs. 45, 46, 47, 48, 49, 50 and 51. 



TABLE XXXIV. 



24.04^0 Ni.; T^-\iigr.jinin? 



26.64?^ Ni.; T=\2ogr.j}iim. 



The change of rigidity in these irreversible nickel steels is 

 inappreciably small at ordinary temperatures. After cooling them 

 in liquid air, a small change is observed, as shown in the above 



