/Co n c l u s io n s : (1) A study of 55 Negroes with various degrees of lead absorption is pre sented. (2) Exposure to lead dust and fumes 0000-NLI-000022563

Lead la a emulative poison.

There is really no excuse except ignorance and carelessness Tor the occurrence of lead poisoning in modern industry.

White Lead in Oil, similar to the plan now being used by the other Lead otrroders.

Lead burning 1.

Procedures "A*, and aC" together enable the tetraethyl lead; triethyl lead and diethyl lead contents of a sludge to be determined.

National Lead The superiority of this Comp maintained and a large increase confidently anticipated.

It is entirely certain that there is no level of lead in the blood which is indicative of lead poisoning.

Chronic lead poisoning has never been seen in association vith exposure to these organic lead compounds.

Vhether this is actually the result of lead in the tissues or vhether it is change indirectly due to the presence of lead in the tissues, is a matter of no consequence.

-White Lead White Lead Department, Fast Chicago, Ind.Zino Oxide Lead Refining Dept., last Chicago, Ind.

-I 1 j ; 8410 QO * Mhlta lead Department, East Chicago, Ind* Lead Befinlncr Decart*ntT Itaat Chicago.

The biological problem, however, relates not so much to the presence of lead ^.n the human (animal) environment, as to the lead that gains access to the human (and other animal) organism.

I am sure you are aware of the possibility of other difficulties them lead exposure, but since your request related to lead I shall confine myself thereto.

You seem to have said that acute infections in childhood plumbism Desalted in the mobilization of lead and in the exacerbation of the illness of the child With-lead poisoning.