TRANSPIRATION STUDIES. 



27 



but lost its leaves immediately and gained a new set after two weeks. The 

 areas were as follows: No. 1, 68.31 sq. cm.; No. 2, 75.70 sq. cm.; No. 3, 

 101.67 sq. cm.; No. 4, 13.11 sq. cm. No. 1 had acquired a new set of leaves 

 since April 25, when they were taken off for measurement. 



TABLE 9. Transpiration of four potted plants. Experiment IX. Date, June 30, 1911. 



1 8 



10 11 12 1 



FIG. 13. Graphs for actual transpiration of four potted 

 plants. Exp. IX. 



