The Internal Pressures of Liquids 



611 



if the computation is made by Eotvos formula, for TV* /3 in 

 the manner shown farther on (Table 6). 



I may repeat, to make the point quite clear, that I think by 

 taking the value (T C /(T C T))- 76 in place of the theoretical 

 value (T C /(T C T)) 2/3 for these surface-tension measurements 

 we offset, at least approximately, some constant source of 

 error, possibly the angle of contact, involved in the determination 

 of the surface tension by the capillary method. The opinion 

 has been expressed by others that the error due to the neglect 

 of the angle of contact, or the assumption that it is zero, will 

 increase with the temperature. 



TABLE 2 



"a" in dynes for a gram mol computed by formula (7) 

 Methyl formate Ethyl acetate Benzene 



Chlorbenzene 



Carbon tetrachloride 



Ether 



