SOME EXPERIMENTAL OBSERVATIONS CON- 

 CERNING THE BEHAVIOR OF VARIOUS 

 BEES IN THEIR VISITS TO COTTON 

 BLOSSOMS. II 



H. A. ALLARD 

 U. S. Department of Agriculture 



Experiment No. 21.— July 29. Observations con- 

 tinued one half hour, from 1:30 to 2:00 p.m. Three 

 blossoms arranged in the same row. 



(a) Control. Normal American upland cotton blossom 

 pinned in position. 



(b) Control. Normal American upland cotton blossom 

 pinned in position. 



(c) Hawasaki blossom entire pinned in position. 









D 







E 





ENT NO. 21 



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Experiments 18, 19, 20 and 21 are essentially similar, 

 since in each a blossom of the Asiatic cotton, Hawasaki, 

 is compared with American upland blossoms. The 

 points of location of the blossoms were unchanged 

 throughout, but the blossoms themselves were inter- 

 changed in order to check any advantage which might 

 obtain from a particular position in the arrangement. 



The Hawasaki blossom is smaller in size than the up- 

 land and much brighter yellow in color with conspicuous 

 deep reddish purple petal spots inside. It was thought 



