636 Proceedings of Royal Society of Edinburgh. [sess. 
inches during 1 month. In the year with the minimum rainfall 
of 49 ‘62 inches there were no fewer than 8 months during which 
the rainfall did not reach 4*42 inches per mensem. If account he 
taken of the varying rate of evaporation, etc., which is at a 
maximum during summer, when there is also the least rainfall, 
and if the daily records he examined in place of the monthly 
records, the inequality of varying supply and regular demand is 
more marked, and the greater necessity shown for the provision of 
reservoir storage. 
(Issued separately May 10 , 1905 .) 
