"In nature," explained Dr. Wendell Holmes Tisdale, "there is no such thing as a pest. But in human economy, anything that competes with man for his means of subsistence may be considered a pest."
Dr. Tisdale, a big, florid Alabaman of 45, is director of Du Font's new anti-pest laboratory which was formally opened last week in the suburbs of Wilmington, and of which the formal name is Pest Control Research Section, Grasselli Chemicals Department, E. I. du Pont de Nemours & Co. A handful of newshawks assembled in the gleaming Nemours building,...
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