628 Scientific Proceedings, Royal Dublin Society. 



These equations can also be used to calculate curves showing the rate of 

 solution in water of the different gases under different conditions, and as 

 an example the curves for oxygen between 0° C. and 30° C. have been 

 calculated in percentages of saturation, and are shown in fig. 9. It is note- 

 worthy that when expressed in percentages of saturation, the curves for the 

 three gases lie very close to each other, those for oxygen and nitrogen being 

 practically identical. 



The authors desire to express again their indebtedness to Dr. Hacket 

 (Lecturer in Physics in this College) for the interest he has taken in this 

 investigation, and the valuable assistance he has generously given in the 

 mathematical treatment of the subject. 



Chemical Department, 



Royal College of Science for Ireland. 



