366 The Effect of Potassium Salts on Dactylis glomerata 



Fi". 3. Diagram of + -section of stem of Dactylis glomerata. e = epidermis, a.t. =assimi- 

 latory tissue, c.l. = central lacuna, o.b. = outer bundle, scZ. = sclerenchjrma, c. = cortex, 

 i.h. = inner bundle. 



Fig. 4. Drawing of sclerenchymatous 

 cells from young stem grown on 

 plot with added potash. 



Fig. 5. Drawing of cells similar to those 

 shown in Fig. 4, but from stem grown 

 without added potash. 



