502 
Observations on the various Insects 
however, are in all probability one of the greatest checks to the 
perfecting of these larvae. 
Tile next is the pupa or chrysalis state, which the larvae assume 
about the end of March and in July, when the sickly yjlants are 
easily discovered, and may be pulled up, and should be burnt im- 
mediately, unless there is a prospect of the spring corn throwing 
out lateral shoots, and producing, as Mr. Markwick's did, an 
abundant crop. I have now only to observe that as neither the 
eggs, larvae, nor pupae are deposited in the earth, of course no 
ploughing or harrowing can be of the least service; and as the 
injury, although it may be occasionally alarming, is not followed 
by any succession of continued attacks, the mischief caused by 
them hitherto appears to have been only temporary. 
Summary of.the foregoing Report. 
The larvce of some minute beetle destroying the green wheat in 
1802. 
One-fifth part of the wheat sown destroyed by them. 
Wireioorms occasioned an annual loss of 60,000 bushels of 
seed. 
Larva probably of a Ground-beetle, or Carabus, feeding on 
the roots of corn. 
Zabnis gibbus, a Ground-beetle, which devours the soft grains 
of wheat in standing corn. 
The female lays her eggs in clusters in the earth. 
The larva; burrow in the earth, and do great mischief, by eat- 
ing into the stem, sometimes destroying two successive crops of 
ivheat in Germany and Italy. 
They also attack rge and barley. 
Both the larva; and perfect insects feed by night, and lie con- 
cealed during the day. 
Poultry and Crorcs will clear the land after ploughing. 
Peat-ashes are an excellent dressing for infested lands in the 
spring. 
The Field-chaffer feeds upon the soft grain of rye and wheat. 
It is not known if their larva" attack the roots of corn. 
May-bugs abundant in corn-fields, feeding on leaves and flowers. 
Do they injure the corn? 
Their larva; consume the roots of gra.tses. 
A Caterpillar which feeds upon the grains of wheat in the field, 
as well as in the barn. It also lives upon the seeds of grasses. 
These larva; destroyed onc-tliird of the produce occasionally. 
Noxious insects often appear simultaneously over a great extent 
of country. 
These Caterpillars will attack and destroy each other in confine- 
ment. 
