1890.] 



The Passive State of Iron and Steel 



121 



Table I continued. 

 Influence of Magnetisation on the Passive State of Steel. 



Some of the magnetised bars employed in the experiments on 

 Table I were magnetised by touch, and in other experiments they 

 were magnetised in the coil as previously described. 



In some instances on Table I it was noticed that on the first im- 

 mersion of the metals in the nitric acid an almost instantaneous but 

 steady deflection of considerable extent of the needle of the galvano- 

 meter occurred, indicating an electro -positive position for the 



K 2 



