BUREAU OF PLAXT QUARANTINE 9 
receiving instruction in their duties and examining infested cornfields in the 
vicinity of Freehold, these men were assigned to scout in sections outside the 
known infested districts of the Eastern States. Routine scouting activities in 
both the western and central areas were discontinued on September 13. A small 
amount of rechecking, rescouting, and river scouting was continued for a few 
weeks after that date. 
Spread of the borer, as determined by scouting operations during the summer 
of 1932, was much less than the usual annual migration of the insect. Weather 
conditions in the spring and early summer largely unfavorable for flight of the 
adult moths evidently accounted for this less-than-normal spread. Newly 
infested townships were found in seven States. These new infestations are 
located within comparatively short distances of territory previously known to 
be infested. 
Scouting in Mosel township, Sheboygan County, and Centerville township, 
Manitowoc County, Wis., in which townships a few borers were discovered in 
1931 and where clean-up measures were subsequently practiced, gave negative 
results. Field surveys farther south in the lake counties of Wisconsin resulted 
in the collection of 13 borers on a farm in Mount Pleasant township, Racine 
County. This first-record find is the most remote from known infested territory 
of those discovered in 1932. Activities in Indiana resulted in the finding of 
small infestations of from 1 to 3 borers each in 7 townships of 5 counties in previ- 
ously uninfested districts in the northwestern and southeastern sections of the 
State. The latter localities are all in close proximity to known infested sections. 
Field operations in Kentucky led to discovery of a single borer in section no. 4, 
near Newport, in Campbell County. This section is near the Ohio River in one 
of the northernmost Kentucky counties. Only one new infestation, a find of three 
borers, was recorded in West Virginia. This find was made on a farm in Union 
township, Marion County. A single township intervenes between this infesta- 
tion and previously regulated territory. A fairly scattered infestation throughout 
Bucks County, Pa., was indicated by observations of infestations in Nockamixon, 
Bridgeton, and Tinicum townships. Bucks County adjoins the 1-generation 
infested zone. 
Scouting in Delaware and counties not known to be infested in New Jersey 
gave negative results. Surveys in the lower Eastern Shore sections of Maryland 
disclosed 5 infested districts in 2 counties. A farm in Willards district, Wicomico 
County, yielded two borers. In adjoining Worcester County, single infestation 
were found in the districts of Colbourne, Newark, and Snow Hill. In Stocktons 
district of the same county, infestations were found on two farms. 
A single borer collected in Temperanceville district of Accomac County, Va., 
indicates that the clean-up of the small infestation discovered there in 1931 did 
not reach all borers in the section. In addition to the specimen collected in the 
Temperanceville district, first-record finds were made in Metompkin and Lee 
districts of the same county. 
STATE COMPULSORY CLEAN-UP CAMPAIGNS 
Probably the most vigorous of the compulsory clean-up campaigns undertaken 
by infested States were those conducted by Connecticut, Maine, Massachusetts, 
and Rhode Island. In Connecticut, a clean-up crew of 21 men, each supplied 
with a light truck, began their work in the southern half of the State on April 12. 
Examinations for cornstalks or stubble were gradually extended to the northern 
tier of counties. The survey was completed early in June. Only 3 prosecu- 
tions were necessary, 2 of which were occasioned by the refusal of owners to 
plow and burn cornstalks in compliance with the State orders. 
Half an acre of sweet corn in which infestation was discovered in a suburb 
of Racine, Wis., was promptly cut and destroyed. 
Several demonstrations of corn-borer-control implements were staged in 
cooperation with State or county agricultural officials in a number of Connecti- 
cut and Massachusetts localities. 
FALL SURVEY OF INFESTATION 
Surveys for degree of infestation were started in Indiana, Ohio, and Michi- 
gan on August 15 by 16 men withdrawn from the regular BCOUting >r the 
purpose. ^ In addition, the Bureau <>f 1 Intomology furnished 6 experienced b< 
and the State of Indiana supplied l man for borer-population counts. Similar 
work in eastern seaboard Infest* began shortly thereafter. I'ive men 
were provided by this Bureau for the work in the Middle Atlantic and New 
England States. Survey work in the western area was completed on September 
15. In the eastern district it extended until September 
L298&— .",.;— a 
