Intertitles explain the problem with the warble fly and how much money is lost to farmers. Illustrations explain how the fly infests its host and then spoil the hides. A maggot is squeezed out of a hide. Cow hides which have previously been infested by warble are shown; a dip is prepared and cattle treated. Dipping is essential in other regions; in Africa and Argentina, the latter with a line-up of gauchos. Ends abruptly.
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