16 
number of bollworm eggs. As soon as no more fresh white eggs are 
found each morning, the silk ends of the corn should be cut away and 
burned or fed to stock in order to destroy the young worms and the eggs. 
A few eggs may also be found upon the leaves of the plants, and since 
no more growth is to be made the plants should be cut and destroyed. 
Then 3 more of the rows should be planted to dent corn at such a 
time as to bring the silking period about the 1st of July or a little 
later. Upon these rows very large numbers of eggs will be laid, but 
they should be allowed to mature in order that the natural enemies 
which parasitize the eggs and prey upon the larvee may uot be destroyed. 
The crowded condition of the worms in the ears developed in these 
3 rows will induce cannibalism to such an extent that the number of 
worms reaching maturity will be reduced to the minimum, and these 
can well be allowed to escape if the natural enemies are saved thereby. 
To trap these escaping individuals, however, the fifth and last row of 
the vacant strips should be planted to sweet corn at a time which will 
allow it to reach full silk about August 1, since the majority of the 
moths begin issuing again about that time. This last row should be 
carefully watched, and the corn should be cut and destroyed as soon as 
it appears that no more eggs are being deposited. Mr. Mally found 
that the corn produced by_the second planting is likely to be large 
enough in quantity to pay for expense of cultivation and the sacrifice 
made by cropping the 5 rows in corn instead of cotton. Moreover, he 
thinks that if the first two plantings are well managed the earlier 
broods of the bollworm will be so reduced in numbers that the August 
brood will not be capable of inflicting great injury, and therefore in 
the less-infested regions the third planting may be dispensed with. He 
further found that it was not necessary to crop the entire plantation 
with this 5 to 25 rows of corn to cotton. If 5 acres be planted iti this 
way for every 50 acres of cotton, or even 5 acres of trap alternate for 
75 or 100 acres, the crop of the entire plantation may be protected. 
THE MEXICAN COTTON-BOLL WEEVIL. 
From the present outlook the most important of the insects which 
damage the cotton boll, next to the bollworm itself, is the cotton-boll 
weevil (Anthonomus grandis Boh.). 
GENERAL APPEARANCE AND METHOD OF WORK. 
This insect is a small, grayish weevil, of the shape and general 
appearance shown in fig. 7, a, and measuring a little less than a quar- 
ter of an inchin Jength. Itis found in the cotton fields throughout 
the season, puncturing and laying its eggs in the squares and bolls. 
The larve, of the shape and appearance shown at fig. 7, c, and measur- 
ing a little over three-eighths of an inch in length when full grown, 
live within the buds and bolls and feed upon their interior substance. 
