110 
Observations on the various Insects 
The moths hatched in Mai/ escape by the icindows, those that 
are born after harvest remain in the granaries. 
The caterpillars and chrysalides may be killed by applying heat, 
and its moderate action for a certain period is more efficacious 
than intensity for a short time. 
An insect-mill, like a coffee-roaster, at a temperature of about 
167° of Fahrenheit, will deprive the beetles of life in the grain. 
Corn submitted to this heat is not more subject io ferment, nor 
to be devoured by insects, nor is it less capable of vegetating than 
that which has not undergone the operation. 
The expenses attending it do not amount to three farthings per 
bushel. 
Another machine for shaking the grain is expected to destroy 
the insect in its different stages. 
The Wolf, or little grain-moth, is abundant in our granaries 
from April till August. 
The caterpillar does incredible mischief to bonded corn, feeding 
on wheat, barley, rye and oats, and it is said also on old timber, 
books, boxes, woollen stuffs, &c. 
The female moth lays about 30 eggs, depositing one or two on 
each grain. 
The caterpillars hatch in 16 days or less, and penetrate the 
grain, eventually uniting several together by a web. 
They sometimes cover the whole mass of corn with a web 3 
inches thick. 
\n August or September they are full grown, and leave the corn- 
heaps, and change to chrysalides in a web in the floor, walls, or 
roof, and will even eat into the knots of fir saturated with tur- 
pentine. 
They live there as larva; until March, or even May, when they 
are transformed to chrysalides. 
The moth deposits its eggs on the sheaves in the feld, as well as 
on the corn that is housed. 
Before filing an empty granary, cleanse, scour, and whitewash 
it thoroughly, in the winter if possible. 
Other remedies, by the application of heat or cold, should be 
tried in summer, when the larvae are at work. 
The moths may be destroyed in the spring by burning lamps or 
gas-lights, at the same season turn over the corn to destroy the eggs 
and disturb the young caterpillars. 
Plaster the walls smooth inside, filling up all cracks, &c. Stop 
all apertures, covering those for ventilation with wire-gauze. 
Kiln-drying at about 78° Fahr. will hill the larva; when they 
are feeding. 
The caterpillars cannot bear a lower temperature than 55° 
Fahr. ; they became torpid at about 46°, and soon die. 
