owes its lethal properties to its lead content, and that it has no greater capacity to kill outright than that possessed by the soluble salts of lead.

LEAD tNDUST*IES A J iN ., INC.

H a rrie t Hardy about lead in h a ir.

LI A10772 LEAD INDUSTRIES ASSOCIATION, INC. !

Just radar 50,000 copies of ase sent to users sad potential users of lead.

If there are symptoms indicative of lead poisoning and laboratory analysis indicates an elevated blood lead concentration,

* 14 1 o LI6167Z4 LEAD INDUSTRIES ASSOCIATION.

LEAD tNDUST*IES A J iN ., INC.

This, of course, is elementary, for there is no necessity of swallowing lead, and every provision should be made to facilitate the avoidance of swallowing lead.

.-. o*e for lead.

This, of course, is elementary, for there is no necessity of swallowing lead, and every provision should be made to facilitate the avoidance of swallowing lead.

The reasons for the uperiority of the latter procedure arise from 1) the relation of the lead in the blood to the "effective body burden of lead," and 2) to the fact that the oncentration of lead in the blood varies primarily with the amount of lead in tiie body and not to a wide range of physiological variability.

Back in the late thirties, Ethyl Corporation became interested in lead alkyls that would have greater volatility than tetraethyl lead, for technical reasons, among which was a desire for a more even distribution of the lead compound among the cylinders of internal combustion engines.

* 14 1 o m mmmm nunmii.ipinwiiw LI6167Z4 <p*"* LEAD INDUSTRIES ASSOCIATION.

After the initial clinical threat has subsided, and the Initial high levels of lead concentration in the blood have subsided following chelation therapy, the concentration of lead in the blood of the child increases during a period of weeks or months (without further exposure to abnormal quantities of lead), and may return to a level not far below the original ' high level.