THE FLIGHT ACTIVITIES OF THE HONEYBEE 



11 



field bees are but little different. By conecting these high points 

 in the flight curve, there is. obtained a second curve (fig. 2) indicat- 

 ing the optimum seasonal flight possible. This optimum curve, 



SOOOO 



/5 20 25 JO 



/5 20 25 JO 



/O /S 20 2$ JO 



/O Aff 20 25 JO 



Fig. 2. — Total number of exits of bees from bive on each day during' the period 

 of investigation. Dotted lines indicate days on which no records were taken 



from the end of April to the first week of the honey flow in May, 

 shows a fairly steep ascent (rising from 10,000' or 20,000 exits to 

 60,000 or 70,000 exits daily), indicative of the increasing number of 

 field bees and their increased number of trips on the advent of the 

 honey flow. 



8/0 /5 20 25 JO 5 /O /5 20 25 JO 



/5 20 25 JO 



5 /O /5 20 25 JO 



xsozy 



FlG, ■',. Graphical record of dally gains and losses in weight of the hive. Tho 

 dotted portions of tin- curve Indicate days on which weighings were not mad» i , 

 or wore vitiated by moisture on the hive 



Figure 3 illustrates another phase of the seasonal survey by pre- 

 senting the increase or decrease in weight of the hive during the 

 greater part of the period of investigation. 



