18 



AKT. 



noXDA AXD T. TEPvADA. 



The effect of tlie ■ graduated ai)plication of twist does not 

 sensibly differ from tliat of applying the maximum twist at once. 

 {d) Magnetizaiion nnder condant twist combined with ten- 

 sions : {I, H)-,r. 



The effect of a constant twist on magnetization is very small ; 

 in a small twist, the magnetization sliglitly increases, but above 

 a moderate twist, it is decreased l)y twisting. With a moderate 

 twist, curves {oT, H)-^-,. as deduced from {I, U)-,r have an opposite 

 sign to those deduced from (o/., r)j,r', but tliey have the same 

 sign as curves (o/,., ll)-,r obtained from (''/„ r)/, ,, The following- 

 tables and the dotted curves in Figs. 13, 14 and 15 will show 

 these changes of magnetization. 



SWEDISH IRON. 



