Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXIX. No. 23. —June, 1901. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY 

 OF HAItVARD COLLEGE. 



THE SIGNIFICANCE OF CHANGING ATOMIC VOLUME. 



IV.— THE EFFECTS OF CHEMICAL AND COHESIVE 

 INTERNAL PRESSURE. 



By Theodork William Richards. 



