362 The Effect of Potassium Salts on Dactylis glomerata 



55 





f^aySl. Junes. IS. 26. 



Fie;. IG. Mean diameter of lumina, xylem, in presence of added potash 



Full line ^^ Plot 7, no nitrogenous fertiliser added. 

 Broken line - - - Plot 9,. nitrogenous fertiliser added. 



Mayol. Junes. 15. 2.6. 



Fig. 17. Mean ratio of lumen diameter to wall thickness, in presence of added potash. 



Full line ^^— Plot 7, no nitrogenous fertiliser added. 

 Broken line - - - Plot 9, nitrogenous fertiliser added. 



