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When a field is attacked by the migratory broods of Army-worms 
about the best remedy is ditching , or making a ditch around the field 
to be protected, with the side next the field smooth and perpendicular, 
as they cannot readily climb such a wall of dirt and they will tumble 
into the ditch in attempting to cross it, where they may be destroyed. 
Sometimes they migrate in su h numbers that the ditch, if shallow, 
may be filled so full of the worms that a.portion may passover. To 
avoid this the ditch should be made deep enough to prevent such an 
occurrence. The ditch may be made with a plow at first, cleaning 
out with a khovel. 
“The general color of the full grown Army-worm is dingy black, 
striped longitudinally as follows: On the back a broad dusky stripe; 
then a narrow black line ; then a narrow white line; then a yellowish 
stripe; then a narrow subobsolete white line ; then a yellowish stripe ; 
then a subobsolete white line; belly, obscure green.” 
The general color of the fore wings of the moth is light reddish- 
brown or fawn color, with the ordinary spots a little lighter than the 
ground color, but chiefly known by a small white spot in the centre 
of the wing, and an oblique dusky line from the tips towards the hind 
margin. The hind wings are blackish, darker in the outer part. 
CORN-WORM OR BOLL-WORM —(Heliothis armigera —Huh.) 
The Armed Heliothis is largely cosmopolitan in its character, be¬ 
ing found not only throughout various parts of the United States, but 
also in Europe, Asia and Australia. In the Southern States the larva 
is known as the Boll-worm, and forms one of the chief obstacles in the 
insect line to the successful raising of cotton. In the more Northern 
States, especially in the latitude of Southern Illinois, it is known as 
the Corn-worm because it annually dues a considerable amount of dam¬ 
age to the ears of growing corn; and in those parts of this section 
where cotton is raised, that plant will also be injured by it as well as 
corn. It does not stop here, however, but goes into the gardens and 
eats the ears of sweet corn, green tomatoes, green peas and peppers; 
and if I mistake not I have found the same worm in the growing seed 
pod of a species of Hibiscus (Hibiscus grandiflora ,) that grows along 
our streams. In the more northern portion of the State it seems to dc 
but little damage. It is reported as occasionally found in the corn 
though it is not considered injurious. Some years, however, they oc¬ 
cur there in considerable numbers and injure corn to some extent 
though less than farther south. The following letter received b) 
Prof. Thomas from Mr. W. B. Brown, of Belvidere, containing spec! 
mens of the worm for identification will give an idea of their work 
there the past season. 
“ I found them eating the corn from the cob, or rather they had beer 
eating for they were all dead when I discovered them, not having 
made the discovery until after a hard freeze. They commenced a 
the small end of the ear and took it all as they went, apparently con 
tinuing to work around the ear. I found some ears from which th< 
corn had been eaten off two or three inches. The worm is of a dari 
