78 



THE PHYSIOLOGY OF STOMATA. 



June 21, igo6.—Ampelopsis quinquefolia. (Fig. 29.) Stomatal movement during day ; 

 plant on east side of building in sunlight till 1 1 a. m. ; on west side in shade till that 

 hour. 1 eyepiece part= 3.5 micra. 



Table 44. 



3a.m 



I f iG. 29. — Curves of stomatal movement, between the hours of 3 a. m. and 3 ll 30 m 

 p.m., for Ampelopsis quinquefolia. 100 parts on the ordinates = l part in 

 table 44. e. e., eastern exposure of building; w.e., western exposure. 



