and, if we find that the Hessian Fly puparia fall just 
below the machine customarily, there will he neither 
difficulty or loss in collecting the rubbish and dirt and 
destroying it. 
From the above observation it appears that puparia 
or “ flax-seeds ” may he transmitted in corn rubbish. In 
samples of screenings and “ sweepings ” from imported 
corn I have found, besides a large amount of live and 
dead beetles, also weed-seeds, smut, and other matters 
undesirable to spread abroad (as may easily be done 
where these are used for poultry-food, and thus thrown 
out in farmyards), and as, with these, broken bits of 
stem are to be found, it appears at least possible that 
“flax-seed” may also be conveyed. In Dr. Packard’s 
paper on the subject (previously quoted) he alludes to the 
possibility of the pest being transmitted in wheat. 
Methods of Prevention. 
At present nearly all we know on this head is learnt 
from agricultural publications of other countries, and 
especially from the Reports of the Agricultural Depart¬ 
ment of the United States, but in our own country we 
have one regular and constant safeguard against autumn 
attack in the fact that wheat in this country is not sown 
usually until well after the time when plants may be 
considered safe from eggs being laid upon them by the 
autumn brood of the Hessian Fly. 
This point of prevention is stated as follows in the 
Third Report of the United States Entomological Com¬ 
mission : “ Late sowing of most of the wheat seed. All 
writers, both entomological and agricultural, concur in 
recommending this easily applied remedy, that at least 
a part of the wheat should not be sown until after the 
20th September in the Northern States.”* 
In this country this remedy is applied for the most 
part in regular process of farming arrangements; 
* See Third Eeport of United States Entomological Commission, 
Department of Agriculture, p. 221, 1880-82. 
