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miles north of San Diego, it is reported to have destroyed 75 per cent 
of crop in 1892. 
In Mexico this year (1894) the damage to crop in Zaragoza and San 
Juan Allende region of Ooahuila was estimated at 90 per cent. The 
damage over 30 years ago in the Monclova district was between 90 and 
100 per cent. In Matamoras the damage this year was over 90 per 
cent also. This is considerably greater than the damage there in pre- 
vious years, according to Mr. H. Nielsen. 
There- seems to be some evidence pointing to greater damage by the 
weevil in wet years. Mr. Delamer, whose field (north of San Diego) 
was badly damaged in 1892, says that he had much rain that year in 
his immediate vicinity, while other localities around him had none. 
Mr. Bios writes also that the prevailing impression m the Monclova 
district is that the weevil was worse in wet years. 
REMEDIES NECESSARY TO EXTERMINATE IT. 
The insect is by far the worst pest that has ever appeared on cotton, 
and the most difficult to combat. Like all weevils, it is very tenacious 
of life, and its habit of frequenting the squares renders it not amenable* 
to ordinary treatment. 
Burning the fields. — If possible all infested fields should be burned 
completely during the winter, while the weevils are in a state of hiber- 
nation. Cotton planters in general argue that it will be very difficult to 
do this. If, however, the plants are all cut down and distributed evenly 
over the fields it should be possible to completely burn all the stalks 
and any j>ossible leaves or debris there may be upon the ground. If 
this is done the weevils that are in the bolls and those that may be 
under the leaves on the ground will be destroyed. This will be a very 
large percentage of them, and if there are no cracks in the ground nor 
clods to any extent it will take nearly all of them. It is almost certain 
that the great majority of the weevils remain in the cotton fields through 
the»winter, and spread into new fields only during the early part of the 
season following. 
Flooding. — In localities where irrigation is practiced, as at San Juan 
Allende, Coahuila, it will be easy to fiood the fields after burning them 
over and* allow the water to staud on them for a week or two. This 
would kill any weevils that had crawled into cracks in the ground, 
and would greatly increase the growth of the plants the following sea- 
son. In Brownsville irrigation is accomplished only by pumping up 
water with machinery and then distributing it, and flooding there would 
thus be more difficult. It would, however, be possible at some expense, 
and.less irrigation would be necessary during the summer months if 
this winter flooding were practiced. 
Rotation of crops. — In addition to burning and flooding, or burning 
alone, rotation of crops should be practiced. No cotton, not even a 
single plant, should be allowed to grow for two years anywhere in the 
