A short dictionary entry on apparatus for destroying the cotton worm, a pest of cotton crops. It notes that many forms exist, some also used against rose, potato, vine and melon bugs, and lists devices (sprinklers, sprayers, sifters, dusters, brush collectors, moth traps and trap-lanterns) with the inventors and page references in Comstock's 1879 U.S. Department of Agriculture Report upon the Cotton Worm.