20 



SATURATED STEAM, AND OTUER VAPORS. 



Other Vapor*. Tables IV to IX are taken from Zeuner's Mechanischen 

 Warmetkeorie. His values for the specific volume and density were calcu- 

 lated with 273 for the absolute temperature of C., and with r.'l f 



iiic :il i .juivalcnt of heat. To lu-inn these tables into accord with Tables 

 I, II. and III. the values of the specific volume and density have been 

 modified by using 273.7 for the absolute temperature of C., and !_'<., fr 

 the mechanical i <jiiiv:ilrnt of heat at Paris. 



filiations by \\ liirli the tables were calculated, taken from Regnault's 



irs, Academie des Sciences, Comptes rendu*, Tome A A A 17. :n< here 



assembled, together with Zeuner's equations for the differential co-efficient, 



TEMPERATURE AND PRESSURE. 



TEMPERATURE AND PRESSURE Concluded. 



The equation for the temperature and pressure of the saturated vapor of 

 ceton, as recalculated by Zeuner, is, 



log p = a 6a" -f c*. 



a = 5.3085419. 



log&u" = -f 0.53127GG - 0.0026148. 

 log c/3" a - 



