Diagram XXVI. 
512 
Proceedings of Poyal Society of Edinburgh. [sess. 
particular curve belongs to the class of distribution known as 
type VI. 
We are now in a position to make a practical application of the 
facts regarding epidemics which have been described in the pre- 
ceding pages. The example which I have chosen is one which 
has a special interest at the present time, both theoretically and 
