VAPOR-DENSITIES. 



391 



TABLE V. ACETIC ACID. 



EXPERIMENTS OF NAUMANN. 



in order the pressure of an experiment, the density calculated by 

 equation (12), the observed density, and the excess of observed density, 

 the temperature of the experiment being given at the head of the 

 column. These experiments, taken by themselves, seem to show an 

 effect of pressure upon the density about one third greater than is 

 indicated by the formula. But the divergences (of which the greatest 

 is '26 and the average '085) are not large in view of the fact that 

 the experiments were undertaken rather with the desire of obtaining 

 a great number of observations with moderate labor, than with the 

 intention of attaining the greatest possible accuracy. 



