The article by Lamm and Rosen raises problems which are discussed by Mitchell and Sarett and which, in the opinion of the Committee on Nutrition, deserve careful attention. Lamm and Rosen imply in subtle fashion that lead in milk has been reduced as the consequence of action resulting from attention given to the problem. This response may indeed have followed action taken by milk companies to protect milk products from lead contamination, but we believe the data of Lamm and Rosen do not prove this point. Unfortunately, two different methods of lead analysis in milk were used in the 1971 (preaction) and 1972-1973 (postaction) studies.