No. L] THE GYPSY MOTH. 447 



longer infested to any serious extent. About one thousand 

 acres of woodland were generally infested there in 1896, 

 portions of it being in as bad condition as anywhere in the 

 whole infested region. In the Saugus woods, where an- 

 other thousand acres were infested at that time, the moths 

 are now becoming very scarce. Even in the Middlesex 

 Fells region they are not now generally numerous. 



Places formerly infested in which no Gypsy Moths 

 were found in 1898. 



The gypsy moth was not found in 1898 in Beverly, 

 Brighton, Dan vers, Charlestown, Nahant, Reading and 

 Waltham. As it is possible that straggling caterpillars 

 have been disseminated to some of these places from the 

 badly infested central territory, they should all be examined 

 in 1899 ; and, even if no gypsy moths are then found in 

 them, they should still be examined occasionally thereafter. 

 Marblehead cannot be included in this list, as a single 

 caterpillar was found there in the summer of 1898. 



The Outer Towns. 



Under this heading those towns are mainly considered 

 which lie between the central towns of the infested region 

 and its border. They are the towns which are now believed 

 to be little infested, their condition varying from that of 

 Marblehead, in which only one caterpillar was found in 

 1898, to that of Belmont, where numbers were found. The 

 condition of each of the outer towns is given below : — 



Arlington. 



The condition of Arlington was quite accurately deter- 

 mined by the examination of the winter of 1897-98 and by 

 the work of the summer of 1898. Nearly if not quite all 

 the old colonies in the residential part of the town appear 

 to be exterminated. The woodland colonies have been 

 greatly reduced, and are now, with perhaps one or two 

 exceptions, very nearly exterminated. In all the woodland 

 colonies on the north side of the town only about seventy 



