414 PROCEEDINGS OF THE AMERICAN ACADEMY § 1 5 



sion, specific heat, critical temperature and surface ten- 

 sion, tables have been constructed expressing the value 

 of each of these constants in terms of the ratio of /' to /„ , 

 called the Principal Argmnent. In the case of the coef- 

 ficient of expansion, the ratio was calculated in Table X. 

 explicitly in terms of e, for 0° centigrade, by means of the 

 formula I. «-, of § 7, 



which became — - = ^-^ ^—^ I. 



4 3 + 1092 fo 



For the critical temperature ( T^ in Table XI. formula 

 (6) of § 13 was employed, at the temperature zero, neglect- 

 ing the external pressure. This became 



V /J . 



was employed, being obtained by dividing equation (4) of 

 § 13 by equation (5) of the same section, and substituting 

 the values of the constants. 



For the latent heat, in Table XIII., calculated at intervals 

 of 10° from 0° to 150°, the fundamental equation I. of § 3 

 was used in the form, 



^- :.974r-, fi_Cl IV. 



Finally the difference of the specific heats in the liquid 

 state under constant pressure and under constant volume 

 is calculated in Table XIV. for the same intervals, by a 



