1914] 



OTIS— TRANSPIRATION OF WATER PLANTS 



477 



removal of the various parts from time to time, 

 t to approximate very nearly growth under normal 



CHART III. 



14 15 16 17 X 19 

 AUGUST 



1 



21 22X24 

 9 10. 



conditions of development. Both sides of the leaf blades, with the 

 exception of those of the water lily, which contain stomata on the 

 upper side only, and those portions of the petioles or culms above 



