In 1909 an experiment was conducted for the purpose 

 of determining the comparative effect of pollen oTotained 

 from the flowers of a different plant, from other flowers 

 of the same plant, and of pollen from the same flower, in 

 fertilizing flowers that were artificially tripped. In 

 one experiment conducted in 1909, 59.09 percent of the 

 flowers which had heen fertilized with pollen from other 

 plants, produced pods containing 3.71 seeds each; 32.16 

 percent of the flowers fertilized with pollen from the 

 same flowers produced pods containing 1.56 seeds each. In 

 another experiment carried out in the same year, 67.37 

 percent of the flowers fertilized with pollen from other 

 plants produced pods containing 3.42 seeds each, and 42.85 

 percent of the flowers fertilized with pollen from the 

 same flowers produced pods containing 1.61 seeds' each. In 

 1910, 34.8 percent of the flowers- which were fertilized 

 with pollen from other plants produced pods containing 1.87 

 mature seeds each; and 23.5 percent of the flowers which 

 were fertilized with pollen of other flowers of the same 

 p4.ant produced pods containing: 1.3 mature seeds each. 



The results of these three series of experiments show- 

 ed that when alfalfa flowers were fertilized with pollen 

 from other plants, a larger percentage of the flowers 

 produced pods and a larger numher of seeds per pod develop- 

 ed than when the flowers were fertilized either with pollen 

 ffora the same flower or from other flowers on the same 



(55) 



