BUREAU OF KXTOMdl.Oin AMI PLANT QUARANTINE 
31 
1938 and carried into the zone on the high-velocity, rotating air cur- 
rents prevalent at that time. Because of this unusual and decidedly 
abnormal wind spread, approximately one-half of the total zone area 
should be scouted and treatment applied within the next year or two 
>o as to insure the continued satisfactory maintenance of the zone in 
its present location. From intensive scouting work this year at sites 
of infestations discovered in the New England barrier zone area, in 
New York, and in Pennsylvania, during the fiscal year 1939. it was 
determined that 99 infestations have been exterminated. Of this 
total 15 were exterminated in Vermont. 7 in Massachusetts, IT in Con- 
necticut, 30 in New York, and 30 in Pennsylvania. There has been a 
marked reduction in egg clusters at numerous other infested sites. 
Infestations found in Princeton and Calais in Washington County, 
Maine, in 1938 and 1939, respectively, were intensively scouted in the 
fall of 1939 by two experienced employees. As no evidence of the 
gypsy moth was found, these infestations are considered exterminated. 
Helpful cooperation was maintained with the Dominion of Canada 
Division of Production and with the Province of New Brunsw ick 
and local authorities in St. Stephen across the border from Calais, 
Maine, where a small infestation of the gypsy moth is being treated. 
With the exception of a very limited amount of work in territory 
adjacent to the zone in Rutland County, work in Vermont was confined 
to the barrier zone, principally north of Rutland. As nearly all the 
cages that attracted male moths were located in Addison County, it 
was planned to expend a large proportion of the available funds there 
this year. Scarcity of relief labor in that county, however, made it 
impossible to secure a sufficient force to effect satisfactory progress. 
Unfortunately the State-wide rate was not authorized for W. P. A. 
gypsy moth work in Vermont, therefore workers from bordering coun- 
ties receiving a higher rate could not be used in Addison County with- 
out specific authority from the W. P. A. Late in the year authority 
was secured from the State Administrator to employ a small force of 
Rutland County workers in southern Addison County, but this could 
not be done until the workers had been reclassified to the Addison 
County rate. As this rate was much lower than was paid workers 
employed in Rutland County, many of the men soon became discour- 
aged and left. For this reason, and also because of a serious shortage 
of certified relief labor in Addison County, much urgently needed work 
in dangerous territory could not be done. Two high-powered spra yers 
were used during June on the single-shift 8-hour-day basis in spraying 
infestations discovered during the year in Bristol and Middlebury, 
Addison County. 
W ork in Massachusetts was confined to the barrier zone, compris- 
ing all of Berkshire County, the town of Monroe in Franklin County, 
and limited areas on high elevations adjacent to the zone in Franklin. 
Hampshire, and Hampden Counties. As stated, numerous scattering 
egg clusters were discovered in the zone, so distributed as to indicate 
conclusively that they had become established as a result of the wind 
-pread of small caterpillars in the spring of 1939. and to some extent 
by fragments of egg clusters dislodged from trees and carried into 
the zone by winds of high velocity during the hurricane of Sep- 
tember 1938. Similar conditions were reported by the New York 
Conservation Department in towns adjacent to the Massachusetts line 
