68 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



For Cp we have apparently only one value, again clue to Regnault,^^ 

 who gives 16.80 at — 28.4°, a temperature beyond the range of this 

 work. 



TABLE XIII. 



Volume of Ethyl Chloride. 



Ethyl Bromide. — Two sets of measurements were made on this, 

 both being with the smaller bulb and over the entire pressure range. 



52 Regnault, 1. c. (1862). 



