Man examines the plants to see the effect of the poison used for the Weevils on plants in United States.
United States USA Date:1930 Duration:2 min 37 sec Sound:NO SOUND
Laboratory test of Weevils fed with toxic compounds, Weevils examined at Edgewood Arsenal in United States. Man smokes cigar and inspects the plants. Plant toxicity test to note the effect of poison on plant. Man examines a poisoned Weevil. He notes down the results. Test tubes on table. Man tests the compounds and Weevils in the test tubes. A cotton farm.
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