Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXVIII. No. 19. — February, 1903. 



CONTRIBUTIONS FROM THE JEFFERSON PHYSICAL LABORATORY, 



HARVARD COLLEGE. 



ON THE TEMPERATURE COEFFICIENTS OF MAGNETS 

 MADE OF CHILLED CAST IRON 



By B. O. Peirce. 



Investigations on Light and Heat, made and published wholly or in part with Appropriations 



from the rcmford fukd. 



