RECORDS FROM REPORTS OF SCOUTING. 43 
The records for the winter of 1911-12 are not given, as it was 
impossible to secure the information from some of the cities men- 
tioned. The data concerning the infestation in cities and towns in 
Massachusetts have been kindly furnished by State Forester F. W. 
Rane and his assistants, while similar data from the other States 
have been supplied by Mr. Rogers. It will be noted that the city 
of Brockton was found infested in 1905-6 and that the same is 
I rue of Portsmouth, N. H. An excellent opportunity is offered for 
comparing the number of egg clusters found in these two cities from 
year to year. It will be observed that at the end of the fifth year 
1,575 egg clusters were found in Brockton, while over 72,000 were 
treated in Portsmouth, N. H. This indicates very strongly that new 
infestations were continually being brought about through the spread 
of caterpillars by the wind. 
Somewhat the same conditions will be noted on comparing the 
record of infestation at Worcester with that of Nashua, Manchester, 
and Concord. The increase in Worcester for the period shown in 
the table is slightly less than that in Brockton, which shows that 
the wind was more favorable for spread in the direction of the latter 
city. 
It should be noted that all the newly infested points were treated 
each year, and in many cases colonies were exterminated, but as a 
rule a larger number of new infestations were found in different 
parts of the cities the next year, and the total of egg clusters usually 
showed an increase. 
In connection with these data it is interesting to consider the 
record of infestation in the State of Rhode Island. The gipsy moth 
was first found in the city of Providence in 1901, and some work 
was done to control the insect during the five succeeding years. 
In 1906-7 a careful examination was made by agents of the Bureau 
of Entomology in cooperation with the State of Rhode Island, and 
several towns surrounding that city were found infested. In all, 
79,000 egg clusters were found and treated. In 1907-8, 7,500 egg 
clusters were found, and the following winter only 1,164 were dis- 
covered. During the next two winters there was a slight increase 
in the number of egg clusters found, as several newly infested places 
were discovered. No work was done in the summer of 1911, because 
the State failed to provide the necessary funds. During the winter 
of 1911-12 an examination made by the agents of the Bureau of 
Entomology showed that the insect had increased rapidly, 37,293 
egg clusters having been found and five new towns having been 
infested. 
The territory infested includes both city and country, and the 
figures show how rapidly reinfestation takes place after suppression 
work is stopped. The data also indicate that the rate of increase is 
