ANGOUMOIS MOTH. 19 
shocks. The larve are not destroyed in the threshing, and are carried 
in the grains to the granaries.* 
The following notes by the entomologist to the New Jersey Agri- 
cultural College Experiment Station, and the New Jersey State Board 
of Agriculture, U.S.A., convey on the same points such useful practical 
information, that I quote the passage almost entire from Prof. John 
B. Smith’s serviceable volume on ‘ Economic Entomology’ + :— 
‘‘The insects sometimes lay their eggs upon grain in the fields, 
and when it is cut and brought into the barn, they continue breeding 
in the mow so long as it remains there. Corn-cribs frequently become 
infested, and the insects breed as long as the temperature remains 
mild. 
«Where grain is threshed and bulked, the upper layers may be 
infested, but the insects are not able to get in very far, because the 
moth is unable to escape through any heavy layer, becoming worn 
out, and dying before reaching the surface. The insect is much more 
troublesome southward than it is to the north, where the cold weather 
checks breeding before it has an opportunity to do much damage; but 
in regions where the temperature in the barns is moderate throughout 
the winter, it frequently does great injury. 
‘‘The best remedy is threshing and bulking the grain as soon as 
possible, covering the bins to keep out the imsects. If infection is 
noticed, it can be easily checked by evaporating bisulphide of carbon 
in a dish upon the surface. The vapour is heavy, and sinks through 
it to the bottom, effectually clearing out any insects that may be 
present. In corn-cribs, the bisulphide can also be used, but the crib 
must be temporarily closed by canvas or sheeting, so that the vapour 
may become effective before it escapes. 
‘It has been found by experiment that grain can be exposed to 
this vapour for a considerable time without losing in germinating 
qualities, but seed Wheat should be, if possible, kept free from such 
insects. . . . Open corn-cribs should be placed in such a way 
as to get the benefit of all the cold weather there is, and thus the 
multiplication of the insects will be checked so early that no serious 
damage will be done.” —/(J. B. 8.) 
It should perhaps be observed in passing, that in the above extract 
the word “‘corn”’ is used in the American sense, and is to be under- 
stood as Indian Corn or Maize; but the treatment is equally applicable 
to Barley, Wheat, or other of the cereals in which the ‘‘ Angoumois 
* See ‘“‘The Angoumois Moth or Fly Weevil (Gelechia cerealella),” by L. O. 
Howard. ‘Insect Life,’ vol. v. p. 326. United States Department of Agriculture, 
Washington. 
t See ‘Economic Entomology,’ by John B. Smith, Sc.D., p. 326. Philadelphia: 
J. B. Lippincott Company. 1896. 
c2 
