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JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 16 
pear tree and about 100 ft. from the apple trees that were sprayed. 
The bees that were feeding on the trees at the time the spraying was 
done were passing to and fro from this hive. On April 19 the same 
trees were sprayed again; on this day I used dry acid arsenate of lead at 
the rate of 4 lbs. to 50 gals, of water, and added to this dry Bordeaux 
mixture, using the latter at the rate of 6 lbs. to 50 gals, of water. There 
were still a few blossoms on one of the apple trees and many on the pear 
tree. During the interval between April 12 and 191 had an opportunity 
to watch the bees as they were coming from and returning to the hive 
on the lot near the sprayed trees. As far as I could determine they 
were in normal condition. 
On April 17 I placed a hive with a fairly strong colony of bees in it, 
under one of the apple trees on an adjoining lot where there were five or 
six apple trees blooming. The hive was kept closed for 24 hours and 
when it was opened in the evening a great many bees came flying out 
but within an hour most of them had reentered the hive or had settled on 
it close to the entrance. The next day a number of dead bees were 
found on the canvas that was spread in front of the hive. These were 
all brushed away; I found later that seme dead bees were still being 
carried out; these bees had doubtless died because the hive was closed 
for such a long time. Cn April 19 1 selected two of the trees that were 
closest to the hive and gave them a very thorough spraying with arsenate 
of lead, using 6 lbs. of arsenate of lead to 50 gals, of water, and applying 
5 gallons of the spray to each tree. These trees were in full bloom, a 
few of the petals were just beginning to fall. Care was taken to drive 
the spray into the calyx cups as much as possible. A third tree which 
was much larger and which was just coming into full bloom, was sprayed 
with dry acid arsenate of lead, using 4 lbs. of the arsenate of lead to 
50 gals, of water. About half of this tree was sprayed with the coarse 
spray, an attempt being made to drive the spray into the calyx cup as 
usual. The other half was sprayed with a fine mist, an attempt being 
made to cover all of the blossoms and the leaves with this fine mist. 
The spraying was continued until it appeared that the leaves were 
covered with all of the material they would hold without dripping. 
When I began spraying, the bees from the hive were feeding on the 
blossoms in great numbers; most of them were driven away by spray 
material but within ten minutes of the time the spraying was stopped, a 
number of them were back on the tree again, so their feeding was in¬ 
terrupted for only a short period. The day was sunny and fairly warm 
although a slight breeze was blowing intermittently. This.work was 
