The absorption of tetraethyl lead, because of the chemical nature of the compound and of its early degradation products in the human body is not taken up by the erythrocytes as are the inorganic compounds of lead.

e found her to be suffering from at the time of our examination v;as related to the use of gasoline containing tetraethyl lead, as we consider that a definitely toxic substance.

(Ahta^i-h moil g&mjinc* now con tain it, adding tetraethyl lead it not tW only way to Increase a furTl anti knock prttpertlca.

Mr. fils co-Gill further informs me that lie has forwarded cer tain articles on the medical aspects of fcha handling of tetraethyl lead and leaded gasoline, as translated into Spanish.

You are aware, of course, that the quantity of ETHYL fluid which is in Ethyl Gasoline is small, and that the only lead which would be left behind after the emptying of the gasoline tank and after washing, would be small amounts of unchanged and decomposed tetraethyl lead which might remain in the encrustations on the sides of the tank and _ to some degree on the bottom.

Mr. fils co-Gill further informs me that lie has forwarded cer tain articles on the medical aspects of fcha handling of tetraethyl lead and leaded gasoline, as translated into Spanish.

The absorption of tetraethyl lead has never been known to induce peripheral neuritis or paralysis of any other type.

01 400 Table 12 Distribution of Workmen Employed in Mixing Tetraethyl Lead with Gasoline / jAccording to Milligram* of Lead per Liter of Urine Milligram* of Lead Per Liter of Urine 192?

clour distinction rust ha drarm, :<n tea hbcim by the vmeentr^dieted evidence, between tetraethyl i eo-j non leaded noth ice.

That is to cay, there are certain locations in which men tend to be exposed fairly frequently to the vapors of tetraethyl lead.

The dangers here are very real, '"e have made a very elaborate study of this pro blem, 'which I can not go into in detail in this letter, but under certain circumstances, which are not predictable, considera ble quantities of decomposition products of tetraethyl lead, to gether with small quantities of tetraethyl lead itself, accumu late under the water layer In the bottom of these* tanks.

Thoso with the results of analysis, are listed below* and are compared with the average results obtained by this laboratory on normal parsons* as well as those obtained in a previous fatal case of tetraethyl lead poisoning.

The dangers here are very real, '"e have made a very elaborate study of this pro blem, 'which I can not go into in detail in this letter, but under certain circumstances, which are not predictable, considera ble quantities of decomposition products of tetraethyl lead, to gether with small quantities of tetraethyl lead itself, accumu late under the water layer In the bottom of these* tanks.

I believe that it is the same there* The complication that I speak of arises from the fact that the lead concentration in the blood following the absorption of tetraethyl lead# is quite different than with which would obtain if the.same quantity of inorganic lead were absorbed in the same time In other words the relationship between lead concentration in the blood and that in the urine is quite different When tetraethyl lead is being absorbed.

May 8.-- A t the hearing General to be May h2e0ld before the Surgeon on ethyl or leaded gasoline, Thom as Midgley, jr., Vice an attendant bring a quantity of pure tetraethyl, washed his hands thor oughly in the fluid and dried them on his handkerchief.