50 THE DISPERSION OF THE GIPSY MOTH. 
record of infestation of Westboro, which was much nearer the badly 
infested territory, and, other things being equal, should have become 
badly infested sooner than Townsend, where the first infestation was 
located a year later. 
The scouting of Dunbarton and Farmington, K H., has been car- 
ried on by scouts working under the direction of Mr. D. M. Rogers, 
and Table VII shows that the infestation has been greater than 
that in the towns given in central Massachusetts, and about the 
same as that found in Townsend. 
It will be observed that in Westboro seven colonies, containing 377 
egg clusters, were found in 1906-7, which indicates that the moth 
was present the previous year, and probably would have been found 
if there had been sufficient time to make a thorough inspection. 
In the winter of 1911-12 214 colonies were found and 1,897 egg 
clusters were treated. When this is compared with the record given 
for Townsend, which started from one egg cluster in the winter of 
1907-8, one can not escape the conviction, inasmuch as most of the 
infestations recorded in the winter of 1911-12 were in localities which 
had previously not been known to be infested, that the rapid infes- 
tation of this territory was due to the dispersion of young caterpillars 
by the wind. 
PLANS FOR SCOUTING WOODLAND AREAS. 
Many data have been given showing that the dispersion of the 
gipsy moth is largely due to small caterpillars carried by the 
wind, but it seemed desirable to determine whether the woodland 
areas in the towns where only a few colonies existed were becoming 
infested by this insect. The matter was thoroughly discussed by 
Messrs. Fiske, Rogers, and the writer, and as a result plans were 
made to scout large areas in several of the outlying towns. The 
plans were approved by Dr. L. O. Howard. It was arranged that 
the scouting work should be carried on under the direction of Mr. 
Rogers, and it was begun in October, 1911. Owing to the severe 
winter and heavy snowfall in the infested territory it was impossible 
to finish all the towns until late in the spring of 1912. The work was 
carried through, however, and a statement of the results follows. 
The original plan contemplated the examination of every tree in 
the whole or a part of the towns of Lisbon and Yarmouth, Me., 
Milton, Tilton, and Bennington, N. H., and Gardner, Grafton, and 
Wareham, Mass. (See fig. 6.) It will be noted that these towns are 
located in the sparsely infested area (map l),and it was expected that 
some interesting data on wind dispersion would be secured. Work in 
Bennington, N. H., was carried on under the direction of General 
Foreman I. L. Bailey ; that in Maine and in Tilton and Milton, X. H., 
and Grafton, Mass., was directed by General Foreman H. L. Mcln- 
