Proceedings of the American Academy of Arts and Sciences. 

 Vol. XLIII. iS^o. 21. — June, 1908. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY OF 

 HARVARD COLLEGE. 



CONCERNING THE USE OF ELECTRICAL HEATING 

 IN FRACTIONAL DISTILLATION. 



By Theodore W. Richards and J. Howard Mathews. 



Invbstiqations on Lioht and Heat made and published, wholly or in paet, with Appkopblation 



feou the rumfokd fcnd. 



