ROSA ACICULARIS. 37 



Table 18. — Visits to normal flowers and those with honey on the stamens. 



The results indicate that the honey did not constitute an added attraction, 

 except possibly to Prosopis and Andrena. 



Diluted honey was put on the stamens of half the flowers employed in 

 experiment 1, while in experiment 2 the honey was placed in a circle around 

 the base of the filaments and an additional drop at the center of the stamen 

 mass; 10 normal and 10 honey flowers were used in each case, and the obser- 

 vation period was 2 hours. 



Table 19. — Visitors to normal and honey floivers. 



Placing honey on the stamens reduced the number of visitors very greatly, 

 the ratio being 24 : 4. This was due to interference with the usual collection 

 of pollen. When the honey was placed at the base of the filaments, the 

 visits of Bombus juxtus were likewise reduced, but those of B. proximus 

 were doubled, without an evident reason. However, it landed and took 

 honey in but 10 of these, leaving the others immediately after alighting, 

 as though disturbed by the presence of the honey. 



Honey and talcum powder. — Flowers were modified by the addition 

 of pure or diluted honey, or talcum powder of the "Love me" and "Arbutus" 

 brands. There were 10 of each type of modified flowers used and 40 normal 

 ones were paired with them for comparison. Of the 49 visitors, 30 went to 

 normal flowers, 4 to flowers with pure honey, 8 to flowers with diluted 

 honey, 5 to those with "Love me" sachet, and 2 to those with "Arbutus" 



