Some effects of copper and lead salt ions on the freshwater triclad, "Polycelis felina," are investigated in terms of locomotion behavior and survivability. Both the importance and the potential protective role of mucus secretion, which is a by-product of flatworm locomotion, are assessed. (Author/JJK)

Examines the need for a science of toxicology and training at both the undergraduate and graduate levels in response to legislation controlling drugs, food additives and toxic substances in the work environment, and concern about effects on man. Stresses need for putting toxicology on a scientific base with adequate funding. (JM)