CHANGE OF ELASTIC CONSTANTS OF FERKOMAGNETICS. 



29 



The observed change of elasticity is generally similar to that 

 for 50.72 ^o Ni, but less in its amount, as shown in Table XX 



and in full lines in Fig. 18. 



TABLE XX. 



/=9°.2 C. 



dE 



The calculated values of — r^ are generally greater than the 

 above values, the difference being less for greater tensions, as seen in 

 Table XXI and Fig. 18 with dotted lines. The diflerence almost 

 vanishes for a tension of 3 k«;. 



TABLE XXL 



-//= ±805 gf.juinir 



