No. 17.1 AGRICULTURAL COLLEGE. 87 



lives on the under side of the leaves, and eats multitudes of holes 

 into them. I know of no remedy. 



The larger cabbage worm, which is the larvae of the common white 

 butterfly, (Pieris Protodice, Boisd ) is about one inch in length, green- 

 ish, marked with longitudinal yellow stripes. This season it was 

 found in some abundance in the garden, boring into the heads of 

 cabbage ; and when it was allowed to have its own way it utterly 

 destroyed the head. Hand picking the " worms" will do much to 

 prevent their ravages. The butterflies can also be easily caught in 

 hand-nets and killed, as they are not rapid in flight. 



The cabbage plant louse {Aphis brassicce, L.,) was very abundant 

 during the past season, and proved quite injurious to cabbage, cauli- 

 flower, kale &e. I know of no effectual remedy. 



On Corn. This season a neighbor called my attention to a worm 

 which was boring into his corn. Upon examination I found it to be 

 the corn worm {Ileliothis armigera, Ilubner,) which seem 6 to be ad- 

 vancing upon us from the south, where it feeds upon the cotton bolls, 

 and is accordingly called the Boll Worm. 



The perfect insect is a night flying morli, with a spread of 

 wins: of an inch and a half or more, while the worm or larva is in size 

 and appearance very much like a fat cut-worm. Hand picking, though 

 laborious, seems to be the most effectual remedy yet discovered. 



On Cucumber, Squash, &c. — The two worst enemies of these 

 plants, during the last two years, were the twelve spotted cucumber 

 beetle, (Diabrotica 12-punctata, Fabr.) and the striped squash beetle, 

 (Diabrotlca vittata, Fabr.) both of which are yellow above, with 

 black markings, the former with twelve black dots on the back, the 

 latter with three longitudinal black lines. A mixture of one part of 

 Paris green to ten or twelve of flour, proved a very efficient remedy 

 this season. 



On Potatoes. — Tho Colorado potato beetle (Doryphora decemlin- 

 eata, Say.)seems to be slowly giving way before its numerous enemies. 

 For a considerable time last spring the " Lady Bugs," (Coccinella 

 and Uijppodamia) ate up the eggs of the beetle as fast as laid, and I 

 am certain that on the garden, at least, these friends of ours reduced 

 the crop of beetles fully one-half. I was gratified at finding another 

 active enemy of the beetle, the Soldier Bug, busily at work during 

 the summer, killing the young larva-. 



