ni 



Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXIX. No. 1.— June, 1903. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY 

 OF HARVARD COLLEGE. 



THE CHANGEABLE HYDRO LYTIC EQUILIBRIUM OF 

 DISSOLVED CHROMIC SULPHATE. 



By Theodore William Richards and Frederic Bonnet, Jr. 



