Cannon : Transpiration of Fouquieria 



409 



Time. 



1:30 

 2:30 



Per cent of 

 saturation. 



55 



68 



Tern rature 



80° F. 

 79 



Amount in 



milligrams. 



208.7 

 323-7 



The rate of transpiration is .22 milligrams per minute for 100 

 sq. cm. of leaf surface, or 115 milligrams per hour for the entire 

 plant. 



Figure 6. Fottqideria No. II., April 8. This plant was without leaves, March 

 26 {Figure j)\ it was given water March 26 and March 28 and was in leaf April 4. 



Experiment No. 8, Ap 



The savLc 



To watch the reaction of the plant to an increase in the water- 

 supply^ at a time when it was suffering from an insufficient supply, 



