448 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



The tube previously used for gold chloride was filled with cuprous 

 chloride. 



Initial weight of second cuprous chloride tube 119.3358 grams 

 Final " " " " " " 119.3363 " 



Gain 0.0005 " 



Total gain 0.0043 



Pi = 67.1 cm of mercury 

 p 2 = 37.7 " 

 Pi = 92.7 " 

 The time taken for absorption was 3j hours. 



.000350 X 0.0821 X 287 X 760 X 92.7 

 •'• PCO = ~ 19.9 X 67.1 ~ = °- 44 mm - 



3. Discussion of Results. 



For convenience the results obtained above are collected in the 

 following table. 



TABLE IV. 



In all of these experiments, even at 1250°, there was some white 

 powder on the walls of the furnace. Whether a slight decomposition 

 of carbide into its elements takes place at this temperature could not 

 be decided by this means, as the white powder may have been due to 



