Document D3ozDm6bRxw2MGywrjx9YwZ5

AKI'MEXT OF BIOCHEMISTRY OKLAHOMASTATE UNIVERSITY Division of Agr icul t ur e STILLWATER June 6, 1958 Kettering Laboratory of Applied Physiology College of Medicine University of Cincinnati Cincinnati, Ohio Gentlemen: A few'years ago it was my privilege to spend the day in your laboratories and I was much interested in the work that you were doing with possible toxicity of lead 'compounds in drinking waters. . We are confronted with the problem of lead and zinc salts in waters which are used by cattle. I wrould appreciate very much any reprints on your methods of determing lead. The conclusions in regard to acute and accumulative poisoning of lead, zinc and arsenic would also be appreciated. VC-H:aw V. G. Heller ' Emeritus Professor and Head N6023