117 
April, 1887.] history society of Wisconsin. 
and then, as no more returned, we placed the cage over the nest 
and opened it. The wasps came out very slowly, so that al¬ 
though we put the cage in position at 7’.40 a. m., it was 8.30 be¬ 
fore 55 workers had entered. We now closed the nest and one 
of us took the 55 wasps out on to the lake while the other re¬ 
mained at the nest to watch for their return. 
At 8:53,20 of the wasps were liberated an eighth of a mile from 
shore and near the end of an island. All, without exception, 
flew toward the island and away from the nest; whether they 
settled on the island or not could not be determined. The boat 
was then moved an eighth of a mile beyond the island to the 
north, where, at 9:10, the remaining wasps were set free. They 
seemed a good deal confused and flew in all directions. Many 
returned to the boat and alighted, but soon flew away again. 
Two of the wasps that settled on the boat were knocked into the 
water, but they instantly rose and circled up into the air until 
out of sight. 
From 7:40 to 8:58 no wasps returned to the nest. 
At 8:58 1 arrived and was killed. 
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