THE INFESTED REGION. 37 



the Middlesex Fells on the west, will render it impossible to 

 keep the moths out so long as they are numerous in the ad- 

 jacent woodlands. 



Nahant. 



No gypsy moths have been found in Nahant for more than 

 two years. 



Peabody. 



The gypsy moth is believed to be exterminated from all 

 the old infested localities in the centre of Peabody, and in 

 only three of the woodland colonies have moths been found 

 this year. In one of these, 1 caterpillar was found ; in an- 

 other, only 2. The third the large woodland colony in 

 the vicinity of Spring Pond which has been so badly infested 

 in years past appears now to be cleared of the moth ; but, 

 on account of its extent, and the fact that caterpillars were 

 found there this year, it must be carefully watched for at 

 least two years. In 1896, 129,408 caterpillars and 379 pupa 

 were taken there; in 1897, only 458 caterpillars and 14 

 pupse were taken. In the summer a colony was found in the 

 central part of the town, which had become infested since 

 any work had been done there. This colony has since been 

 cleaned, but will require careful watching another year. 



The reduction in the number of the different forms of the 

 moth found in Peabody indicates that a great improvement 

 has been made in the town. 



Reading. 



In 1896 no living form of the moth was found in Reading, 

 but in the winter of 1896-97 one hatched egg-cluster and one 

 dead pupa were found on a farm north of the centre of the 

 town. This place was burlapped in the summer of 1897, 

 and 10 caterpillars and 13 pupae were found there. No form 

 of the moth was found elsewhere in Reading. 



Revere. 



The only considerable tract of woodland in Revere adjoins 

 Maiden and Saugus, and is situated near Franklin Park. 

 This tract had never been thoroughly worked over until 



