508 
LEPIDOPTERA. 
lo(lo;e the ego’s and kill the larvae of the insect. With the 
O OO 
same view, Mr. Owen recommends passing the new wheat 
through “ a rubbing mill, such as is used in Virginia and 
other large wheat-growing districts, to insure first-rate flour”; 
after which the wheat may he kept in bulk, or may be im¬ 
mediately ground. If a large surface of grain be exposed 
in the barn, the granary, or the mill, during the season 
of the moth, it will assuredly become affected; for, in the 
night, when these insects are most active and on the wing, 
they will light upon the exposed surface and deposit their 
eggs, which, in a few months of hot weather, will produce 
numerous and successive broods of moth-worms. To se¬ 
cure it from attack, therefore, the grain should be deposited 
in tight bins or casks, after having been properly prepared 
by being dried in a kiln, or even by exposure to the heat 
of the sun. 
Some persons have succeeded perfectly in preserving 
grain from the corn-weevil and from the corn-moth by 
putting it into casks heated and fumigated with burning 
charcoal. The charcoal may be burnt in a portable furnace, 
lowered into the cask by a chain; and the grain should be 
poured in while the cask is hot. It has been observed that 
a low temperature checks the propagation of the corn-moth, 
and that the larvas, or moth-worms, in the grain cannot 
survive the winter in those places where the thermometer 
falls to zero. Hence, in the cool and well-ventilated corn- 
barns of New England, grain will ordinarily be exempt from 
attack. During the summer, however, grain that has been 
brought from infected districts, or that has otherwise become 
contaminated, Avill be likely to suffer to some extent, even 
here. From these facts Ave learn hoAV important it is that 
Avheat and corn, Avhich are to be kept over Avinter, for use, 
for sale, or for seed, should be previously Avell prepared, 
and should be deposited in suitable vessels in cool apart¬ 
ments, no matter hoAV cold, provided they are also dry. 
It has been observed that very little corn is attacked in the 
