blossom Hosts and Insect Guests 



pollen of a flower to reach the stigma or summit 

 the pistil in order to insure the fruit. 



I have indicated his claim pictorially at 

 Fig. 2, in the series of historical progression. 



of 



A, 



So 



Fig. 2. 



radical was this ''theory" considered that it precipi- 

 tated a lively discussion among the wiseheads, which 

 was prolonged for fifty years, and was only finally 



4 



