408 



Cannon : Transpiration of Fououieria 



Experiment No. 7, Mareh 22 : Effects of irrigation 



At this time the leaves of Fonqnieria No. II, as of others on 

 the mountain (see Effect of rains, page 406), had been nearly all 

 discarded and most of those which remained were yellowish or 



N 



Figure 5. Fouqiiieria No. II, March 26. 



partly withered and plainly indicated the harmful effects of the 

 prolonged d/ought. The rate of transpiration was also very small, 

 as the data of an experiment taken in the midst of the dry time 

 shows. 



The following data were derived from an experiment which was 

 conducted before water was given the plant. 



