ELEMENTARY STUDIES IN INSECT LIFE 



in two masses as though the anthers were two-celled. 

 This pollen as well as the nectar serves to attract bees and 

 other insects. The bright showy petals proclaim to the 

 insects the location of the nectar. 



FIG. 74. Cluster of Bartlett pear blossoms natural size. From a photograph. 

 (After Waite.) 



When a bee visits the flowers the rough stigma brushes 

 from the insect's hairy coat some of the pollen which ad- 

 hered to it while seeking nectar in other trees, and if 

 these trees were another variety this blossom is then 

 cross-pollinated. The pistils mature (that is, become 

 ripe, to receive the pollen) two or three days before the 



