We think it is quite feasible to make Fb203 using our accelerator and to label lead tetraethyl with the Fb203 .

Box 3157 Terminal Annex Loo Angeles 54, California Dear Doctor Kavr: I regrs: very much to have to tell you, even alter this long colcy in replying to your letter o' Juno 4, that we Lave not been Tie, on yot, to obtain the Inform tion on the cacec of tetraethyl lead poisoning treated by Dr.

Kehoe: .Is yen probably know, the addition of tetraethyl-- lead is regul ated by law in Venezuela.

-j r:. 2- 25.VII.57 in undiluted form containing both lead and manganese would probably be more toxic than tetraethyl lead compound alone, while in terms of automobile exhaust gases the best one could hope for is that no more significant air pollution would result from the combination of these two organo-metals, than exists already.

As more lead was found in the effluent air than could be explained by the presence of amounts of gasoline vapor which were found, it seems possible at least that there might have been an accumulation of tetraethyl lead in the hose wall as a consequence of repeated soaking in lead containing liquids and subsequent drying.

As more lead was found in the effluent air than could be explained by the presence of amounts of gasoline vapor which were found, it seems possible at least that there might have been an accumulation of tetraethyl lead in the hose wall as a consequence of repeated soaking in lead containing liquids and subsequent drying.

It seems quite clear, therefore, that there has been no danger to the handlers and users of gasoline from the introduction into it of small quantities of tetraethyl lead.

Philip Boyd asked me about the possible use of tetramethyl lead as a substitute for tetraethyl lead some months ago, and I told him what I could about the matter.

These men are variously engaged in the manufacture of tetraethyl lead and of most of the intermediate products that enter Into the manufacture of tetraethyl lead and anti-knock fluids.

newcomer, I can safely say that the average Doctor on this side knows nothing whatsoever about tetraethyl lead.

.; Prom the description of the man's illness, I suspected that he had had 3ome exposure to tetraethyl lead, and before giving any opinion In the case, I asked that tissues be sent me for analysis.

Unfortunately the precipitation did not manifest itself seriously until after it had been mixed with tetraethyl lead and stood for some length . of time.

-;V tieularly in the ease of Fluid which had baon held for considra ble periods of time* I am sure that the settling out of sludge, due to the decomposition of tetraethyl lead, would give rise to a lower percentage,of lead in the Fluid, at any rate it has been considered advisable to-analyse the Fluid* This ha* been don without consulting anybody connected with the Ethyl Gasoline Gorporation, and of course, has boon done for strictly business rea sons.

Philip Boyd asked me about the possible use of tetramethyl lead as a substitute for tetraethyl lead some months ago, and I told him what I could about the matter.

Bohlnant ' I hare your letter of February 20th concerning the physiological effect of exhaust gas from gasoline containing tetraethyl lead.