POLLINATION AND FKRTILIZATIOX OF FLOWERS. 229 



the quantity, has been plainly and repeatedly demonstrated. 

 This fact, which is of special -importance to the horticulturist, 

 is particularly well shown by the tomato as seen in figures lO 

 and II. Upon the same cluster one flower was given a small 

 an'ount of pollen — lo to 20 grains — on one side of the stigma; 

 the other was given an excess, the stigma being well smeared. 

 This work was repeated many times and in each case the results 

 were the same. The fruit receiving an abundance of pollen 

 was of normal size and nearly symmetrical in form, while the 

 other was small and deformed. It was further found that the posi- 

 tion of the flowers in the cluster has no influence in determining 

 this point. 



As already intimated the above notes are given for the purpose 

 of briefly sum^marizing some of the more prominent features of 

 the subject heretofore considered at this Station, rather than as 

 a report of progress. The latter report will appear in bulletins 

 during the ensuing year. The points for special consideration 

 this year are : The growth of the pollen tube ; a revision of the 

 list of species supposed to show immediate effects of pollen ; the 

 stimulating action of pollen ; the possibility of superfcetation. 



