54 
EASTERN SHADE TREE CONFERENCE 
larly located on the western border of the zone in Vermont covering 398,- 
000 acres have been designated as towns that will not require further 
inspection. There are at the present time small infestations in three 
towns on the eastern border of the zone in Vermont and scattered 
infestations which require treatment in the southern half of the zone in 
New York. The southern half of the zone in Connecticut is not known 
to be infested, but scattering infestations which require intensive treat¬ 
ment occur in the northern half of the zone in that state and in the south¬ 
ern part of the zone area in Massachusetts. 
During the fifteen years since the barrier zone work started, 44 
infestations, most of them small in area and intensity, have been found 
outside the zone in New York state. Forty of these have been extermi¬ 
nated, more than one half of them being located on Long Island. In 
recent infestations in Hague, Warren County; Shawangunk, Ulster 
County; and New Castle, Westchester County; as well as near 
Roslyn, Nassau County, additional work will be required. 
About the time work was begun in the zone, an area in northern New 
Jersey covering over 2300 square miles was found to be infested by this 
insect and intensive treatment was necessary in the central part of this 
area embracing over 400 square miles for the purpose of eliminating the 
pest from that state. Few isolated infestations were found in territory 
outside of the generally infested area and they were promptly cleaned 
up. Federal work in New Jersey was completed in 1932 but the dis¬ 
covery of a few egg clusters along the northern rim of this area has 
made it necessary to do additional work during the past three years. 
At the present time the insect is not known to exist in the state. 
The most serious outlying infestation at the present time was found in 
northeastern Pennsylvania in 1932 in territory surrounding the cities of 
Scranton and Wilkes-Barre. Work has been necessary in an area of 
2500 square miles. The central area which is generally infested and 
covers 236 square miles, is surrounded by a lightly infested area of 800 
square miles, and scattered isolated infestations have been found outside 
this area embracing an additional territory of 1500 square miles which 
has been examined and treated but must be rechecked before inspection 
work can be discontinued. Progress has been made in reducing the 
abundance of the insect and the pest has been exterminated in many 
isolated localities, particularly in the outlying territory. 
During the last fifteen years the states of New York, New Jersey and 
Pennsylvania, except in the sections already mentioned, have been re- 
