fifteen were tripped. The five not tripped were all 

 some of the most recently opened flowers located at the 

 tip cf the racene . 



An examination of a large number of plants in the 

 field showed that during a period of ahout two weeks, or 

 possilily for a somewhat longer period preceding August 

 20t"n, the laajority of the alfalfa flowers had "been devel- 

 oping into pods. Prior to this, there was a period during 

 which hut a small percentage of the flowers had developed 

 into pods, as was 'indicated hy the stems of the older 

 flower racemes, the majority of which were either without 

 pods, or else had only a small number of pods on them. 



On August 22, flowers which were just "beginning to 

 open were marked on ten different plants in these two 

 fields and were watched in order to determine what was 

 causing these flowers to hecome tripped. 



Table XV shows the number of flowers that were 

 observed, and the number and percentage of flowers that 

 had become tripped inside and outside of the netting 

 during t^e four days after the flowers were first observed. 

 Most of the flowers had become wilted by the latter date. 



(36) 



