153 
; . . 
otliing is gained by the use of such high temperatures, as a 
1 h lower one is equally effective. In fact a low temperature and 
er time have been found to be superior. 
ae French long ago learned the value of this remedy, and con- 
cted insect mills after the plan of coffee roasters; which for the 
ler would probably answer a very good purpose. 
or elevators they had rooms fitted up and heated by steam, 
re as many as eight hundred sacks were treated at a time, 
'hr being submitted to a temperature of 135° Fah., and resifted, 
grain was found to be perfectly cleansed. Messrs. Halliday 
i *., of Cairo, Illinois, use for this purpose a dryer, such as is in 
for drying grain for export, and find that it does very good 
ice, a temperature of 200° to 250° Fah. for five minutes being 
cient. 
f course care must be taken that all the grain is reached by the 
i j; hence, large amounts can not be readily managed. 
room of this sort could be fitted up with steam pipes, and grain 
ted at a small expense per bushel, particularly where steam is 
1 as power for elevating. 
he grain should be treated as soon after the moth has deposited 
3ggs as possible, and before the larva has reached its full growth, 
then all the damage possible will have been done. The proper 
i 3, I think, will be found to be during August, or not later than 
tember. It is very probable that wheat passed through this 
J ung process and placed in a clean cool bin, which has been 
; empt> for some time previous to rid it of moths, can safely 
I cept during the winter, and far into the following spring, with- 
sustaining any farther injury from this insect, if all windows or 
jtr openings are guarded by screens to keep the moths outside 
i entering. 
eating grain as above directed, while it destroys all insects in- 
fcng it, in whatever stage of development they happen to be at 
time, does not in any way insure it against future attacks; 
roe care should be exercised to guard against reinfection, 
hreshing grain immediately after harvest is an old and efficient 
: edy, it having been demonstrated again and again that wheat 
| shed early and stored in clean, cool, dry bins, will sustain little 
10 injury, while grain from the same field stacked, and thrashed 
r, will be found badly eaten, particularly if the stacks happen to 
damp in the meantime. 
rain in such condition, if stored, will be sure to heat, and any 
in temperature causes in all cases increased activity in the pests, 
act, grain supposed to be free from insects in any stage, has 
i stored; and, as long as kept cool suffered no injury; but, be¬ 
ing damp and heating, these pests have developed in great num- 
or the same reason, samples of grain kept in glass jars at a 
; erately high temperature, as in offices, have been totally ruined, 
i ough the grain appeared all right when put up. 
levating grain during cold weather, in order to keep it cool until 
in the spring, only retards the development of the insects. 
3 n once fairly ensconced within the grain, there are compara- 
I 
