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.
Measures for the eradication of marine borer in Beaufort, United States. Chemist places small containers covered with cloths on a table. Marine borer on a wood. Wrecked marine pillars.
Measures for the eradication of marine borer at Edgewood Arsenal in Maryland. Man at the pier inspects the piling. The piling is destroyed completely by the marine borer. Man watches the wrecked wood. He cuts a part of the wood and watches it. He takes the marine borer 'Bankia Gouldi' in hand. The head of the pest. Man impregnates the marine pillars with toxic compounds. Another man helps him. The pillars are placed in an apparatus to impregnate them with toxic compounds. Man watches and compares both types of wood before and after intoxicating.
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