1914] 



FULLER— EVAPORATION AND SOIL MOISTURE 



211 



Transeau (12) in a mesophytic forest containing a small percentage 



New 



from Tune 5 to July 



com 



the month 



j 



mean 



years 1910-1912 (table II). While 

 definite conclusions from records c 



^-^ 



Fig. 12. — Ravine in beech-maple forest; station 19 about two-thirds down the 

 right hand slope; Otis, Ind. 



may be assumed that the two associations differ very little in the 



>hytism developed. It is to be regretted that 



meso 



similar 



and 



those of Gleason (8), but unfortunately the latter were not made 



atmometers 



The edaphic prairie is a characteristic plant association of the 

 Chicago region, and while it does not lie in the successional series 

 with which this investigation is most particularly concerned, it was 

 thought that it would be profitable to compare it with the various 



