216 
DISEASES OF THE COTTON PLANT. 
evening, the insects taken out, and the vessels replenished, 
as circumstances may require. I have tried the experiment 
with results equally satisfactory, and shall continue it until 
a better one is adopted." It might be well also to try the 
lantern-trap before mentioned, as another means of destruc- 
tion, and likewise the method of poisoning recommended 
in the general remarks on insects. As it appears from 
Colonel Sorsby's communication that the moth is attracted 
by, and feeds with avidity upon molasses and vinegar, could 
not some tasteless and effective poison be mixed with this 
liquid, so that all the early moths which might partake of 
it would be destroyed before laying their eggs ? 
A long caterpillar, measuring from an inch and three- 
fifths to an inch and nine-tenths in length, and with a thick 
body, is sometimes found in bolls of cotton in similar situ- 
ations as the boll-worm. It feeds likewise upon the leaf, 
and some specimens, which were confined in a box, de- 
voured green corn from the ear. These insects vary much 
in color, some being of a beautiful velvet black, while 
others are considerably lighter. The head of the cater- 
pillar appears small for the bulky size of the body, and is 
black, with two stripes of yellow, forming an angle on the 
front. On each side of the back runs a longitudinal line, 
and below the spiracles is seen another line of a reddish 
or ruddy color. The under part is of a light brown. It 
has six pectoral, eight ventral, and two anal legs, and its 
mode of progression is by a gradual creeping, the same as 
the boll-worm. 
The chrysalides were formed under ground, in cocoons 
of earth, agglutinated with silk, and were about four-fifths 
of an inch in length, and of a brownish color. 
The moth measured an inch and three-tenths across the 
expanded wings ; the upper pair were of a brownish color, 
