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 
3/0 /S 20 2^ .^ S /O /S 20 2^ 30 
^ /O /S 20 2^ 30 ^ /O X5- 20 2S SO 
Fig. 2. — Total number of exits of bees from hive on each day diu-ing 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. 
\/200 
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Cj eoo 
^ 600, 
In 
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A 
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1 
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3/0 /S 20 2S ^30 S /O /S 20 2ff 30 
^ /<? /^ 20 2S 30 
^ /O /^ 20 2S SO 
Fig. 3. — Graphical record of daily gains and losses in weight of the hive. The 
dotted portions of the curve indicate days on which weighings were not made, 
or were 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. 
