358 The Effect of Potassium Salts on Dactylis glomerata 



'^'alS. 31. Junes. 15. Z&. 



Fig. 8. Mean ratio of lumen diameter to wall thickness in sclerenchyma. 



Full line ^^ Plot 7, with added potassium salts. 

 Broken line - - - Plot 8, without added potassium salts. 



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Ll_ 



n<vyl6 31 Junes \S Z& 



Fig. 9. Mean thickness of walls in xylem. 



Full line — Plot 7, with added potassium salts. 

 Broken line - - - Plot 8, without added potassium salts. 



