Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXVIII. No. 14. — Dkcember, 1902. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY 

 OF HARVARD COLLEGE. 



AN APPARATUS FOR THE MEASUREMENT OF THE 

 EXPANSION OF GASES BT HEAT UNDER 

 * CONSTANT PRESSURE. 



By Theodore William Richards and Kenneth Lamartine Mark. 



Investigations on Light and Heat, made and published wholly or in part with Appropriations 



FROM the RuMFORD FOND. 



