Document e1eQddye34B9YzvM4nqzMpqVg

HARVARD MEDICAL SCHOOL DEPARTMENT OF PEDIATRICS Children's Ufbspital jOO Xj?ngwood %Avenat `Boston,...... Zehruary...L spS. Dr. Robert A. Kehoe Laboratory of Applied Physiology College of Medicine University of Cincinnati Cincinnati, Ohio Dear Dr. Kehoe: In the letter which you sent me last June, you mentioned that you were preparing an article for publication describing the details of the dithizone method of analysis for lead. If this has been published I would appreciate a reprint. If not, could you send us the technique which you are now employing? I wonder if the dithizone modified method which you are using has altered your opinion as to the normal blood levels. I am, of course, interested particularly in the younger age group. Sincerely yours, c jc O' 0 32L Kenneth D. Blackfan, M.D. KE 0020093