294 
Proceedings of the Royal Society of Edinburgh. [Sess. 
Results for Manganese Steel (12 per Cent. Mn). 
On placing a specimen of this variety of steel in the field of the electro- 
magnet a weak magnet was obtained. No appreciable change in its 
magnetic moment or in the magnetic quality of the material was brought 
about by the cooling in liquid air. 
The experiments described in the present paper were carried out in 
the Natural Philosophy Institute of the University of Glasgow, and the 
authors desire to express their thanks to Professor Gray for the facilities 
granted them for the carrying out of the work. 
( Issued separately May 11, 1909.) 
