THE PHYSIOLOGY OF STOMATA. 



9:3 



10:00 



10a.m. \Z 



2a.m. 



FIG. 26. Curve for experiment 83. Fouyuieria splendens. The short curve shows the response 

 when the piece was placed for a brief interval in the light between 9 and 10 a.m. 



TABLE 40. Rates of transpiration. 



In all cases an early morning maximum was developed at 6 o'clock, except 

 in No. 82, in which the maximum falls at 5 o'clock. The rates commence to 

 increase at about i a. m. 



Experiment 151, 1905. 



The early morning maximum was attained at 4 o'clock and the rate 

 remained constant till 7 o'clock, after which it fell off till 3 p. m. (see fig. 18). 



