1914] 



FULLER— EVAPORATION AND SOIL MOISTURE 



207 



Midsummer afforded maxima of 16 cc. in 1910, 18.9 cc. in 191 1, 



■ 



and 12.5 cc. in 1912, the minima for these years being respectively 



MAY 





JUNE 







JULY 







W 



AUGUST 



SEPTEMBER 





OCTOBER 









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and 



Fig. 9. — Daily evaporation rates in the oak dune association; stations 8, 9, 10, 



5 cc, 4 cc, and 6.3 cc. per day, while the averages for the seasons 

 were 10.3 cc, 11 .8 cc, 10.9 cc. daily (figs. 4, 5, 6). 



The forest association dominated by Querciis velutina is rather 

 persistent upon the dunes, but is gradually changed by the invasion 



