The results of this experiment agree substa.ntially 

 with the results of the experiment conducted in 1909. In 

 both instances the flowers which had "been fertilized with 

 pollen from other plants produced a larger proportion of 

 pods a.nd more seeds per pod than did the flowers which had 

 "been fertilized with their own pollen or with pollen from 

 other flowers on the same plant . 



Another experiment was carried out in 1910 to 

 obtain some information in regard to the relative effect 

 of fertilizing with pollen from other flowers of the same 

 plant compared with the effect of fertilizing with pollen 

 from the same flower. The flowers that were fertilized 

 with pollen from other flowers of the same plant were 

 tripped with a piece of medium coarse wrapping twine, a 

 single piece of twine "being used to trip all of the flowrs 

 tripped on one plant, in order that pollen might be carried 

 from one flower to another. The flowers fertilized with 

 their own pollen were tripped by using a separate piece of 

 twine for each flower. The hands were sterilized after 

 tripping one flower, before tripping the next, in order 

 to prevent pollen being carried from, one flower to another. 

 Both methods were used on flowers of each of several differ- 

 ent plants. 



(24) 



