342 



Scientific Proceedings^ Royal Dublin Society. 



Values of Bate of Solution for different Bates of Stirring. 



5CALE E 



200 300 400 



Rate oF Sl-irr'm^ in RevoluHons pe*Tninul-e. 



Fig. 7. 



When, however, the effect of increased surface area is taken into account, 

 and the rate of solution per unit area plotted against rate of stirring, the 

 result is the upper line in fig. 7. This curve shows the rapid increase in the 

 rate of solution at first, which gradually falls off as the higher values are 

 reached, and tends to reach a maximum. 



