518 



Scientific Proceedings, Royal Dublin Society. 



shown graphically. An examination of the tables shows that for larger 

 volumes the distillation constant is inversely proportional to the volume, but 

 the agreement when smaller volumes of solution are distilled is not so good, 

 probably" owing to the larger experimental error involved. It is shown later 

 that from theoretical considerations the distillation constant is inversely 

 proportional to the volume. 



Table 1. — Effect of Change in Volume. Constant Concentration. 



Table 2. — Effect of change in Volume. Varying Concentration. 



The total volume for each distillation contains 0-6048 warn of Acetic Acid. 



