to gain access to the flowers. The tents were made large 

 enough and pains were taken so that no flowers which were 

 "being watched were in such a position that they could 

 Torush against the sides or top of the tent. 



After the flowers from which insects were to "be ex- 

 cluded had "been enclosed in the netting tents, they were 

 examined every day or every second day until all of the 

 flowers had hecome entirely wilted. Whenever any flower 

 was found tripped, the calyx was marked with a mixture of 

 carl) on -"black and water, in order that the pods that 

 developed from tripped flowers might "be distinguished 

 from pods that might develop from flowers that had not 

 been o"bserved to "be tripped. 



Ta"ble XIY shows the num"ber of flowers that "became 

 tripped and also the num'taer of pods and seed that develop- 

 ed from tripped and unt ripped flowers. 



(33) 



