Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXV. No. 1. — July, 1899. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY OF 



HARVARD COLLEGE. 



THE DEVELOPMENT AND APPLICATION OF A GEN- 

 ERAL EQUATION FOR FREE ENERGY AND 

 PHY SIC 0- CHEM1 CAL EQ UILIBRl UM. 



By Gilbert Newton Lewis. 



