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in localities from which the smoke will pass over the field or 

 plants desired to be saved will cause the plague to move on or 

 swerve aside. Banners of various kinds waved in the hands or 

 tied to sticks, poles, or trees, will also have a similar effect on 

 the moving" hordes. Bright-colored banners are best for this 

 purpose since they seem to be more readily observed and 

 avoided by the flying insects. Noises, such as beating with 

 sticks on old tin pans or cans, drums, the discharge of firearms, 

 shouts, etc., may also have some frightening effects on the 

 creatures. A combination of all of these may and sometimes 

 is used; but whether or no with increased eñect is a moot-ques- 

 tion. That the locust, like most other insects, rather observes 

 motion and light than color and form, seems a fact. Hence, ban- 

 ners to be of use in frightening the acridian must be kept in 

 motion. If allowed to droop motionless they will be of little or 

 no use. It has also been ascertained by experience that if the 

 banners are waved or moved too rapidly they are almost as 

 useless as if permitted to remain quiet. The reason for this 

 seems to be the possible confusion of the insects, which wiien 

 thus disturbed at once alight and endeavor to hide. 



