Bkcker and Peakson — Irregularities in Solution of Oxygen hy Water. 199 



Table of Results. 



The curves drawn on the graph are reference curves, calculated by means of 

 the formula iv = 100 (1 - c"'"), which has been shown to apply when the water 

 is mixed, however gently. The value of the coefficient " 6 " ' for the upper curve 

 is 0028, and that for the lower curve is 0018, and these values represent the 

 upper and lower limits of the rate of solution under these conditions. 



It will be seen that up to a value of about 60 to 70 per cent, of saturation the 

 experimental values agree well with the logarithmic curves, but bej^ond that the 

 divergences are wide. In the case of the upper curve this is shown by a marked 

 falling-off in the rate of solution, while in the ease of the lower curve a marked 

 increase followed by a falling-off is recorded. 



The fact that the process follows the logarithmic curve during the early 

 stages of the absorption would seem to indicate that the water is kept slowly 

 I)Ut steadily mixed during this stage, while the uncertain behaviour after this 



