1914] 



OTIS—TRAXSPIRATION OF WATER PLANTS 



487 



humidity 



September 



temperature 



most 



CHART X. 





X 8 9 10 11 12 



Sep tember 



16 X 19 20 X 23 24 



1911. 



I 



similar. On the night of September 3, however, the tempera tur 

 was much lower than in the other two cases, but the rate of evapora- 

 tion was higher. 



