Insects infest crops in various parts of United States. A barrier zone created in some areas. Man marks areas with a brush on a map. A campaign baring insects in that area. Men destroy egg clusters of the insects with creosote in the area. Houses and mountains in the background. Dried up trees in the forest. Snow covered forest. Men walk and watch the trees. Brown tail moth webs on trees destroyed.
Insects infest crops in various parts of United States. Man bands trees in the forest. Insects on the bark of tree. Men spray poison on infested trees.
Insects infest crops in various parts of United States. Apparatus for spraying poison in the forest. Storehouses and shop facility for the spraying of poison in the forest. Men bring auxiliary pumps to water for spraying poison.
Insects infest crops in various parts of United States. Poison mixed with water in spray tanks. Long hoses laid for spraying poison on infested trees. Men spray poison.
An aircraft on field in United States. The airplane in flight and it dusts insecticide poison over the forest to combat gypsy moths. Area dusted with poison.
Men handle wood logs at a forest in United States. Men spray poison on the infested trees. Men discuss amongst themselves in office. Information on brown tail and gypsy moths framed on a wall.
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