The figures given In Table 71 show that 58 

 per cent of the flowers which had "been tripped by In- 

 sects or by some other natural agency produced seed; 

 whereas only 5.2 percent of those flowers not trlpr^ed 

 when enclosed in netting produced seeds. The flowers 

 which were tripped when enclosed in the netting produced 

 3.53 seeds per pod. while the three floxvers which were 

 not tripped when enclosed in netting, which produced 

 seeds, produced only one seed per pod. These results 

 agree with those shovvn in Table lY. Table VI also 

 indicates that most of the alfalfa seed produced ^.t 

 Pullman, 'yashington, in 1908, developed from flowers 

 which had been tripped by honey-gathering insects; and 

 that but a small proportion of the flowers which were 

 not visited by honey-gathering insects produced seeds. 



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