Lead Poisoning.

Therefore, if the lead exposure of the individual has been very brief, the lead concentrations in blood and urine return to sub stantially normal limits rather promptly.

a WHITE LEAD DRY S-W White Lead Dry, otherwise known as Basic Carbonate of Lead or Corroded White Lead, is produced by the Old Dutch Process, which results in a Dry White Lead of superior quality.

The compound tetraethyl lead K e oo;2-;.s4 '-/.

Therefore, if we permit fruit to have a lead content of approximately seven parts per million, we must have e verythin,g else at such a low level as to make little or no contribution to the total dietary lead int a k e .

I assume, however, that you are dealing with either the vapors of lead or finely divided dust suspended in the atmosphere.

is Dutch Boy red-lead.

However it is quite clear that the relief which occurs promptly after calcium administration is not due to a change in the blood lead or the urinary lead.

Thus, we are now entirely certain that the absorption of lead from exhaust gas is an insignificant factor in. general lead absorption.

That Its high calcium content does anything significant In relation to lead absorption or lead excretion has not been proveu.

gar,' ons up to the present have indicated that lead concentreticar up to snc. including 6 c.c. tetraethyl lead per American, gallon, are not dangerous.

We have not had a case of lead poisoning in the manufacture of tetraethyl lead, which is much the most dangerous of the lead trades, since the middle period of the war, and we had had none up to that time since 1928.

Herculaneum was one of the first lead smelters to introduce stack effluent dust control (lead in stack dust is the principal source for lead in the soil and air in the vicinity of smelters).

Thus, we are now entirely certain that the absorption of lead from exhaust gas is an insignificant factor in general lead absorption.

A very satisfactory clinical description of lead poisoning can be found by referring to "Lead Ab sorption and Lead Poisoning", by Legge and Goadby, or, by referring to the work of Osier, ''Principles and Prac tice of Medicine", 8th edition, published by D.