116 



COMPETITION AND CONSTANCY. 



Table 82. — Natural and bouquet competition. 



Table 83. — Natural competition of a group. 



as attractive. In a test of plants of Monarda and Geranium, the latter was 

 more than three times as attractive, Bombus bifarius going to it alone, and 

 B. juxtus giving it a marked preference. Similar behavior of B. bifarius 

 was the chief factor in causing a bouquet of Chamaenerium to be preferred 



