HIS BULLETIN gives a general account of the 
boll-weevil problem. It deals with the history of 
the insect in the United States, the damage it has 
done in different regions, the reasons for local varia- 
tions in damage, the indications for the future, the 
habits of the weevil so far as they affect control 
measures, and the means of reducing the injury. 
By experiments begun by the Bureau of Entomol- 
ogy in 1914 and continued to the present time, it has 
been found that the application to all parts of the 
cotton plant of a poison known as powdered calcium 
arsenate, or arsenate of lime, will control this pest 
to a large extent. This chemical has come into 
rather wide use in the cotton belt and when used 
strictly according to directions it has given excellent 
results. When directions given by the Bureau of 
Entomology are not followed, however, failure and 
loss are sure to result. DO IT RIGHT OR NOT 
AT ALL. 
Contribution from the Bureau of Entomology 
L. O. HOWARD, Chief 
Washington, D.C. February, 1922 
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