TRANSPIRATION OF SILPHIUM 



321 



6:30 



8:30 



10:50 



12:30 



2:30 



4:30 



6:30 



Fig. 5. Curves of transpiration of leaves of Silphium from four different 

 heights (solid lines, numbered as in table 6) and of wind velocity (broken line) 

 in experiment of August 19, 1912. 



89° 

 86° 

 83° 



80° 



77" 

 74° 



71° 

 68° 



65° ^ 



6:50 



8:30 



10:30 



12:30 



2:30 



4:30 



6:30 



Fig. 6. Curves of evaporation at two different heights (solid lines, numbered 

 as in table 6), and of temperature and relative humidity in experiment of 

 August 19, 1912. 



