488 PKOCEEDINGS OF THE AMERICAN ACADEMY. 



Summary. 



The results of this paper may be briefly summarized as follows : 



1. A new method for the accurate determination of the specific heats 

 of liquids has been described, using the adiabatic calorimeter and a 

 chemical source of heat. 



2. The heat capacity of a solution of hydrochloric acid of molal 

 concentration HCl + 200 H2O has been measured. 



3. The method has been applied to the accurate determination of 

 heats of dilution. 



4. A solution of alkali was used whose heat of dilution automat- 

 ically compensates for any excess which might have been added. 



Chemical Laboratorv of Harvard 

 College, April 27, 1908. 



