Document jB5oEjg8nkdLa50705ZXZ31nO

October 28,1956 Mr* H* Robert DeRosa West Experiment St at i on , H .S.G., Amherst, Mass* Dear Mr* DeRosa? I am af r ai d I can not supply you with any r eal l y u sefu l informat ion on the spray residue problem sp eci f i cal l y . We are expect ing to undertake an I n vest i gat i on o f t h i s problem in the near f u t u r e, but we have not had an opport unit y to begin cer t ai n st udies which we have planned. On the ot t er hand we have been st udying the int ake and output of lead in a r at h er l ar ge sect ion of the American populat ion over a period of years* Some port ion of the int ake has been due undoubtedly t o the cont ribut ion made by spray r esi dues, and we have pointed out t h i s f act by comparing cer t ai n items of food e&ten by American populat ion wit h corresponding items consumed by n at i ve M exicans. Unfort unat ely I can not send you a r ep r i n t of t h i s work because my supply i s exhaust ed, but I t ake pleasure in r ef er r i n g you t o the September 1935 number of the 'Journal of I n d u st r i al H ygiene, Volume 15, U,ov5*. The ser i es of ar t i cl es which deal with lead absorpt ion and excret ion ip a pr i m i t i ve populat ion and in the American populat ion are a l l t hat I can cont ribut e to the subject at the moment. Very t r u l y your s, RAK j i s Hp6ert A. Kelioe,' id. 35* K 0015162