Proceedings of the American Academy of Arts and Sciences. 

 Vol. XLVI. No. 23. — April, 1911. 



CONTRIBUTIONS FROM THE JEFFERSON PHYSICAL 

 LABORATORY, HARVARD UNIVERSITY. 



ON THE ELECTROMAGNETIC AND THE 



THERMOMAGNETIC TRANSVERSE AND LONGITUDINAL 



EFFECTS IN SOFT IRON. 



By Edwin H. Hall and L. L. Campbell. 



Investigations on Light and Heat published ■mTH Aid from the Rumford Fund. 



