The history of man is closely associated with his food supplies; survival, migrations, community development, formation of government, military campaigns, religious worship, functions of politics. The ability of man to produce food in quantity for increasing populations is dependent upon effective use of fertilizers, insect, rodent, fungicide, miticide, weed, and simular controls, and mechanization. Insect control is an intense problem. The American farm enterprise is rapidly changing characteristics, in population, manpower output, available acreage, and acreage output. Food distribution practices also have changed markedly in the past decade. Military logistics have strong impacts on food production and utilization practices. The necessity for new forms of foods for shifting populations has resulted in re-evaluation of regulations governing the use of chemicals in foods, their functions, and effects.