Abstract
The use of mechanical methods in control of the eastern tent caterpillar was emphasized in an earlier paper (Sweetman, 1940). That report which covered the five-year period 1936-1940 is now brought up through the season of 1945. The site has changed little since 1940 except for the annual increment of plant growth. The wild cherries are more numerous, and the older trees are much taller. The variation in abundance of tents each year follows that of the surrounding area showing that migration into the grounds occurs continually.
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