1894.] Molecular Surface-energy of Mixtures of Liquids. 

 (c.) 2C 6 H 6 to 1CCU. 



189 



The same remarks apply to these results. 



The mean values of k, calculated over the whole range of tempera- 

 tare are given in the next table, together with the values of M, also 

 deduced between the extremes of temperatures by the equation 

 already given. 



Here, again, within limits of experimental error, it is seen that the 

 values of 7 of 7(Mv) s , and of k are uninfluenced by the operation of 

 mixing, and that the mean molecular weight of the mixture is 

 calculable from the data found. 



III. Mixtures of Ghlorobenzene and Ethylene Dibromide. 



A. mixture of equal molecular proportions of these liquids gave the 

 following results : 



