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Government conditions within the zone improved each year until 1927. 
Since then, because of h^avy infestations developing east of the zon^, 
it has be^n more and more difficult to keep the zone cle.an and th~ 
number of infestations have be^n increasing in the southwest corn-r of 
1 :,ssachus^tts and the northwest corner of Connecticut and in the 
adjacent territory to the west in New York State. 
'/.Considering the area in N_w England as a whole, the gypsy moth has 
continued to increase each year since 1924 when 825 acres were reported 
defoliated. Since then the area defoliated has approximately doubled 
each y~ar and during the past summer over 500,000 acres in New England 
were partially or completely defoliated. There was a large increase in 
Hew Hampshire and Maine; conditions -'ere slightly better in Hhode Island, 
eastern Connecticut and the eastern part of Massachusetts but serious 
infestations continued to exist between the Connecticut River and the 
barrier zone and these are a constant source of reinf estation of the 
zone." (Plant Quarantine & Control Administration, U.5.D.A. ) 
BROWN-TAIL MOTH 
"The records which have been obtained in regard to the brown-tail 
moth ( Nygmi a phaeorrhoea Donovan) indicate an increase in abundance in 
some sections in Massachusetts and in the Mcrrimac Valley in Hew 
Hampshire. It has not been abundant over most of the area." (Plant 
Quarantine & Control Administration, U.S.D.A.) 
SATIN iviOTH 
"The satin moth ( Stilpnotia salicis L. ) was abundant over a larger 
area in New England than previously and caused severe defoliation and 
injury of poplar and willow in many towns* In several locations heavy 
infestations of this insect were found in woodland growth of poplar. 
This is the first time this has been observed in New England, only 
poplar and willow on estates and roadsides had previously been attacked. 
Since its discovery in this country near Boston in 1920, it has spread 
rapidly and is now beyond the brown-tail moth lino in most places. In 
Maine it has spread nearly 50 miles in a northeasterly direction beyond 
the brown-tail moth quarantine line. In New Hampshire it is about 20 miles 
further west and in Massachusetts 40 to 50 miles beyond the brown-tail 
moth line. In Vermont, Massachusetts and Connecticut it is well 
established '"est of the Connecticut River. The entire State of Rhode 
Island is infested. This insect was not reported from outside the 
present quarantined area on the Pacific Coast, and as far as is known 
it does not extend south of Lewis County, Wash." (Plant Quarantine & 
Control Administration, U.S.D.A.) 
ORIENTAL MOTH 
"No special effort was made during 1929 by this Division to determine 
the exact area infested by this moth. The situation in regard to the 
