The European Corn Borer. 3 
Extensive scouting operations have been carried on during the 
past three years in ‘the territory surrounding and adjacent to the 
infested areas of New England, New York, Pennsylvania, Ohio, and 
Michigan, as well as along the main lines of travel, river valleys, 
water routes, the vicinity of broom factories, and other susceptible 
localities in those States. Scouting operations have included field 
examinations in susceptible loc alities not only in the territory east of 
and including the Mississippi River basin States, but also in Texas, 
New Mexico, and Arizona. Particular attention has been given lo- 
calities where imported broom corn was known to have ‘heen re- 
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Fic. 2—Map sbowing areas of infestation of the European corn borer in North America, 
as known April 1, 1922: a@, New England area; b, eastern New York area in vicinity 
of Schenectady and Albany ; c, western New York area, including Buffalo and Dunkirk, 
and the spread of 1921 in Pennsylvania, Ohio, and southeastern Michigan; d, Canadian 
areas of infestation. 
ceived, as well as to sections producing field corn, sweet corn, and 
broom corn. Special scrutiny has been given the territory adjacent 
to ocean and river ports as well as railroad centers, and along the 
main railroad, highway, and water routes. 
DOMINION OF CANADA. 
During August, 1920, the Canadian authorities reported an in- 
festation in Welland County, Ontario, bordering the Niagara River 
from the western New York area of infestation, and another large 
and heavily ‘infested area extending along the Canadian shore of 
pe Erie with its apparent center near St. “Thomas, Ontario. (Fig. 
2, d.) 
