No. 4.] THE GYPSY MOTH. 331 



therefore only about one-fourth of the city was inspected in 

 this manner. All the known colonies were burlapped and 

 carefully looked after during the summer. Most of the old 

 colonies appear to have been exterminated before 1897. 

 There are still some in which a few caterpillars were found. 

 Only 3 caterpillars were killed in North Cambridge, in a lo- 

 cality where some years since 35,000 egg-clusters were de- 

 stroyed within a week. There are a few places in Cambridge 

 where numbers of caterpillars were taken. On some of these 

 estates the trees and shrubbery are of such historic value that 

 it is not advisable to destroy them ; thus extermination is 

 rendered extremely difficult. The discovery of single cater- 

 pillars here and there under the burlap indicates that they are 

 scatterino' into Cambridofe from the central towns. 



Chelsea. 



In the southern half of the city only a single pupa was 

 found in 1897. Here all the trees in the immediate vicinity 

 of the colonies infested in 1895 were burlapped and care- 

 fully looked over. In the northern half of the city cater- 

 pillars were found in ten localities. Later in the season a 

 new colony was found on a dumping ground, among some 

 low bushes. Here 2,016 pup» were found; 94 egg-clusters 

 were also destroyed at the last of the burlapping season. 



As Chelsea has in the past been generally infested, and in 

 some sections the moth has been very numerous indeed, the 

 good condition indicated by this report is remarkable. 



The entire city had a tree-to-tree examination in 1895, 

 and was quite thoroughly burlapped in 1894 and 1895 ; but, 

 as Chelsea is immediately adjacent to Everett and quite near 

 Maiden, it is to be expected that caterpillars will be carried 

 there through the ordinary channels of traffic and travel so 

 long as these cities remain uncleared. 



Danvers. 

 Gypsy moths have not been found in Danvers within the 

 past three years. The places formerly infested have been 

 examined ; but, on account of the traffic between it and the 

 infested towns and also between it and Boston, another in- 

 spection soon is desirable. 



