88 Journal of the Mitchell Society. [Nov. 



Chlor-benzene. See Table 13. Data from Jour. Chetn. Soc. 

 1889, p. 486, and 1891, p. 125; except vapor density at 0° C 

 which is theoretical. The molecular weight used is 112.5. 

 For calculating the latent heat, we have, 



A = antilog (1.2268791 + 0.000758450 



+ antilog (0.1846519 — 0.00359227/), 

 where / = t° C — 30. 



lodo-benzene. See Table 14. Data from Jour. Chem. Soc. 

 1889, p. 486, and 1891 p. 125; except vapor density at 30° and 

 100° C which is theoretical. Molecular weight used was 

 203.9. For calculating the latent heat, we have, 



A == 0.09891873 -| antilog 0.001421982/ 



-f antilog (1.28759778 — 0.00324574/) |>, 

 where /=/° C — 30, a form of the equation less convenient 

 for calculation than the one usually adopted. 



Brom-benzene. See Table 15. Data from Jour. Chem. Soc. 

 1889, p. 486, and 1891, p. 125; except vapor density at 30° and 

 100° C which is theoretical. Molecular weight used was 

 157.0. For calculation of the latent heat, we have, 



A = antilog (1.8373717 — 0.00095092/) 



+ antilog 0.0763464 — 0.00489465/), 

 where / = 1° C — 30. 



Carbon Tetrachloride. See Table 16. Data from Jour. 

 Chem. Soc. 1891, p. 911; except vapor density at 0° C which 

 is theoretical. Molecular weight used was 153.8. For calcu- 

 lation of the latent heat, we have, 



A = 0.2358 -| antilog 0.00026855/ 



+ antilog (0.7970507 — 0.00402434/) [►, 

 where / = /° C, a less satisfactory form of the equation than 

 the one usually adopted. 



Stannic Chloride. See Table 19. Data from Jour. Chem. 

 Soc. 1891, p. 911; except density of the vapor at 0° which is 



