Document e1xrexMpV1Ej3R24mzeakaX4

HARVARD MEDICALSCHOOL D EPARTM ENT OF PEDI ATRI CS (Children's (Hospital 3 00 Jjngtvood%Avenue Boston,.. Eabrnaxy...&.. 19 3 8 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, cjc Q. 0 32. Kenneth D. BlacRfan, M.D. na ~7 f"