For our own purposes in the tetraethyl lead industry ve do not regard the conditions as satisfactory If the lead concen tration is in excess of 0*75 mg. of lead per 10 cubic meters of air.

Our reasons fox* serious hesitation lie in the fact that the experimental evidence rather clearly suggests that the complex formed with lead is quite as toxic as the lead .compound alone, if not more so.

For our own purposes in the tetraethyl lead industry we do not regard the conditions as satisfactory if the lead concen tration is in excess of 0.75 of lead per 10 cubic meters of air.

There is a good review of previous work, in which the findings of other authors on tb amounts of lead in blood of normal persona not exposed to lead, end persons ex posed to, and finally poisoned by, lead aro discussed.

RULES AND REGULATIONS For Distribution of Gasoline Containing Tetraethyl Lead Each filling station' shall have promi nently displayed on each pnmp from which gasoline containing tetraethyl lead is dis pensed, either of the following two notices: CONTAINS LEAD (1) (TETRAETHYL) AND IS TO BE USED AS MOTOR FUEL ONLY, NOT FOR CLEANING OR ANY OTHER USE.

In the entire history of the use of leaded gasoline there has never been a case of lead poisoning among the tank wagon drivers, filling station attendants and garage mechanics who have some occasion to come in contact with leaded gasoline or its combus tion products.

The interpretation of the analytical information cannot be made in such a way as to indicate the presence .of lead intoxi cation, There is no value for the lead concentration In the blood, urine or tissues that can be regarded as diagnostic of lead intoxication.

The interpretation of the analytical information cannot be made in such a way as to indicate the presence .of lead intoxi cation, There is no value for the lead concentration in the blood, urine or tissues that can be regarded as diagnostic of lead intoxication.

In other words, the so-called chronic lead poisoning of the classical type does not occur following exposure . to tetraethyl lead.

In other words, the so-called chronic lead poisoning of the classical type does not occur following exposure . to tetraethyl lead.

The tendency to cling to age-old cliches as defenses for lead poisoning or excessive lead absorption in the workers might well be discarded.

The lead particles are deposited in the filter and the vapors passing out are lead-free

We are taking this man out of all exposure to lead and will follow up on his condition to determine his urinary lead out put.

Greener still shows signs of chronic lead poisoning, the lead being fixed and not available for elimination by the kidneys.

It is my belief that the most important factor in the lead output of exposed workmen from day to day is the extent of their lead absorption from day to day.