1914] 



FULLER— EVAPORATION AND SOIL MOISTURE 



229 



tion studies, to limit our comparisons 

 to establish the rather arbitrary limit 1 

 of June to the first of September. 1 

 appears in table III. 



summary 



Fig. 27. — Graphs showing the range of soil moisture in the edaphic prairie for 

 191 2; the heavy line at 7. 5 cm. and the light line at 25 cm. depth; wilting coefficients 

 represented by broken lines. 



No one can realize more fully than does the writer the limitations 

 of the data or the desirability of having them supplemented by 

 more numerous determinations, especially from deeper strata. 

 These limitations will make the conclusions more or less provisional 

 and subject to modification and correction in the future. The 

 most interesting and profitable comparisons are doubtless those 

 to be made from a consideration of the growth-water data shown 



