144 INDIAN CORN CULTURE. 
under favorable conditions. A number of eggs 
are deposited on the side of the kernels. In 
four to seven days they wil! hatch, and the 
larva will then burrow into the kernel and 
begin to feed on the inside of it. In about 
three weeks it is full grown, when it is about 
one-fifth of an inch long. Then it burrows 
towards the outer end of the kernel, leaving 
only athin cap to cover the cavity. A small 
white cocoon is then made in the burrow, and 
the larva in this soon changes to pupa, and 
after a short time emerges in the moth form. 
This insect is especially injurious in the 
South, where stored corn is often seriously 
damaged. North of Kentucky little injury may 
be expected from it, as it 15 a warm climate 
insect. At the New York State experiment 
station the writer had considerable experience 
with it, as it occurred in a collection of corn in 
the museum. These insects were brought to 
the museum in specimen ears shipped from the 
South and before their ravages could be stopped 
nearly the entire collection was ruined. 
In the field there is no known method of 
combating it. To destroy the insect in the 
seed, place the grain in a comparatively tight 
room and pour a little bisulphide of carbon in 
among the corn. This soon changes into a 
deadly gas and will destroy all insects inhaling 
it. But to save the seed the operation should 
