and northwestern Pennsylvania, 12; Ohio, 11; Indiana and Wisconsin, 8* 
Table 1 presents the data on the value of the corn crop and the losses cause# 
by the European corn borer in 1939 within the counties surveyed in each of l6 in- 
fested States, 
The infested area surveyed in 1939, for which damage estimates have been pro, 
pared, comprised 5,274,190 acres of corn harvested for grain, with an estimated 
crop value of $87, *+7*+, 526 , and 181, U 5 U acres of sweet com, with an estimated 
crop value of $18, 289, 286, The combined acreage of grain and sweet com was 
5,^55, 64U, and the estimated crop value of both was $105,763,812. 
The estimated total loss by the European corn borer to the above crop in 
1939 was $3,977,126. This estimated loss was divided as follows: Corn harvested 
for grain, $1,846,335 (*+6,4 percent of the entire loss) and sweet corn, $2,130, 
791 (53,6 percent of the entire loss). . 
In the Lake States area (Ohio, Michigan, Indiana, Wisconsin, northwestern 
Pennsylvania, and western New York) the loss ciaused by the corn borer in 1939 to 
corn harvested for grain was estimated at $1,582,292 (81,7 percent of the entire 
loss in that area) and to s”'eet corn at $35*+, 328 (I 8.3 percent of the entire 
loss), or a total of $ 1 , 936 , 620 . 
In the Eastern States area (New England, New Jersey, Delaware, Maryland, 
Virginia, eastern New York, and northeastern Pennsylvania) the loss caused by the 
corn boror in 1939 to corn harvested for grain was estimated at $264, 043 (12,9 
percent of the entire loss in that area) and to sweet corn at $1,776,463 (87.1 
percent of the entire loss), or a toM. of $2,o4o,506; 
The greatest total damage by the corn borer to corn harvested for grain 
in 1939 occurred in Ohio, Michigan, <snd Indiana, where the estimated losses were 
$853,655, $491,627, and $200,687, respectively. The total estimated loss caused 
by the corn borer to sweet corn in 1939 was highest in Massachusetts, $6l4,778, 
with losses of $ 365 , 858 , $ 362 , 473 , $268,913, $174,743, $111,989, and $107,742, 
respectively, in Connecticut, New York, New Jersey, Michigan, Rhode Island, and 
Ohio, 
