Proceedings of tlie American Academy of Arts and Sciences. 

 Vol. XXXVIII. No. 7. — October, 1902. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY OF 

 HARVARD COLLEGE. 



THE SIGNIFICANCE OF CHANGING ATOMIC VOLUME. 



III.— THE RELATION OF CHANGING HEAT CAPACITY TO 

 CHANGE OF FREE ENERGY, HEAT OF REACTION, CHANGE 

 OF VOLUME, AND CHEMICAL AFFINITY. 



By Thkodoke William Richards. 



