KFFiXT OF >^Tin:ss ox :\r.\(;XF;rizATFOx, 



57 



The theoretical relations to be tested were, however, deduced 

 on the supposition that the magnetization is independent of the 

 order of magnetizing- and straining, so that in comparing the 

 theory and the experiment, too much weight is not to l)e placed 



on the above correspondency. 



, rTrr aii" -vrr "^vcrc deduccQ irom our 



ôH Uli 



0/ 



The values of 



i>H 



previous experiment, while the corresponding values for .^„, , 

 ^rp. and .J- were obtained from the present experiment. In the 



following tables, I -77^ 



and 



0-7 



are the values of tbese differ- 



ential coefficients obtained from curves (o7, 2')j^ ; while 



0-7 



' 0/ 



and 



7'^ 



J^ 

 E' 



hE 



are the values of the coefficients from curves (7, H)t- 

 is the value obtained from the results of the elonga- 



tion method ; while -7^ 



7v 



i(/7 



is that obtained from the ten- 



sion effect on magnetic elongation. -7- 



Tu 



is the value of 



the coefficient obtained from the result of the oscillation method, 



and 



s 



Tlf 



that obtained from the Barus's method ; while 



J)7 

 07^ 



and 



07 



are the values obtained from curves 

 {oT, z)jj and (7. H)- respectively. To find the values of these 

 differential coefficients, corresponding curves were carefully drawn 

 on section papers ; a fine straight line drawn on a thin glass plate 

 was brought into contact with the curve at the required point 

 and the trigonometrical tangent of the inclination of this straight 

 line was evaluated. 



