TRANSPIRATION STUDIES. 



29 



EXPERIMENT X. 



Subject, plants No. 1 and 2; areas, not obtained. Atmometers, No. 496 

 and brown cup No. 10. Situation, in the open, with exposure to sun and 

 wind. On July 27 the leaflets were closed during the entire time of the 



TABLE 10. Transpiration of potted plants under different conditions of soil moisture. 



Experiment X. 



* Soil moisture of No. 1 = 14.8 p. ct. 

 *Soil moisture of No. 2=15.1 p. ct. 



t Soil moisture of No. 1=3.5 p ct. 

 fSoil moisture of No. 2=3.4 p. ct. 



No. 10,' 

 N : o. 496^- 



No. 2 / 



T, : 

 EM / 



July 27 



Aug. 5 



23 10 41 12 1 2 



FIG. 15. Graphs^for transpiration of two potted plants, Nos. 1 and 

 2, under^'different conditions of soil moisture. Exp. X. 



