CLARK. — SURFACE TENSION BETWEEN LIQUIDS AND VAPORS. 379 



20 40 CO 80 100 120 140 160 180 200 220 240 



Figure 13. 

 Ethyl Ether Vapor and Glycerine. 



T'here is the temperature of the heater, d — d) is calculated for the 

 liquid at the temperature of equilibrium, and for the vapor at saturation 

 temperature. 



