OF A PARTIAL REMOVAL OF ROOT;?, ETC. 7 



(2) Fagopyrum esculentum. 



Sachs' solution was used. The specimens were arranged in 

 three series. In the first series, the roots were removed once every 

 day, leaving three lateral roots; in the second series the removal was 

 performed every three days ; and the third series served as control. 



After about one month, the stems of the control plants 

 became greater than those of the other plants and the leaves 

 of the latter showed etiolement. 



If we examine Table II, we shall find that the flowering 

 time was about the same in all series. Fagoinjvum esculentum 

 seems to be much the most sensitive to the injury of the roots. 



Table 11. 



Water-culture of Fago'pyrum esculentum. 



26 August. Young plants -svere transferred to water-culture. 

 10 October. End of tlie experiment. 



The number of flowers was not counted. 



(3) Pisîim arvense. 



Lateral roots of the plants of the first series were removed 

 once every three days. 



As the following table shows, the stems of the first series were 

 shorter than those of the second series, but the roots were longer. 

 The flowering of the first series was later than that of the second. 



