Stimulation of Root Growth in Cuttings 



87 



Ligustnim normally does. The treatment with potassium permanganate, 

 however, largely nullified the unfavorable conditions, and both the root 

 growth and the top development were very much increased (fig. 4). 



Fig. 4. effect of treatment of ligustrum with potassium permanganate under 

 rather adverse conditions 



Upper row: Cuttings treated for twenty-four hours with 0.1 mol. KMnOi, then placed in sand 

 Lower row: Check. Cuttings left for twenty-four hours in tap water, then placed in sand 



TABLE 4. ErFECT of Treatment op Ligustrum with Potassium Permanganate under 



Rather Adverse Conditions 



(Duration of experiment, March 16 to June 13, 1915. Twenty cuttings in each treatment) 



