In view of the recent circumstances on answering inquiries of this nature, particularly that concerned with the Standard Oil Company of New Jersey on treated glores, I told him that I thought such matters should be referred to you for direct answering, as these questions were directly applicable to the use in distributio of lead treated gasolines and not to the manufacturer of tetraethyl-lead.

Hie present warning sign on pumps and other containers be changed to read "lead alkyl" rather than "lead tetraethyl."

However, they felt that we slight want to be informed of this be cause of this doctor*3 having blamed tetraethyl lead for the man*s condition.

Hie present warning sign on pumps and other containers be changed to read "lead alkyl" rather than "lead tetraethyl."

Tetraethyl Lead. " The other article is much more extensive, but specific attention should be called to the extreme skin exposure of the men engaged in filling barrels.

Ab an example of what I mean, this same question arose in Italy some years ago* X attempted to forestall it by advising the people who were undertaking the manufacture of tetraethyl lead.

' Considerable time was spent in discussing the toxicity aspects of the mixed alkyls, I pointed out that we had obtained data showing that the use of tetramethyl lead would result in lead concentrations up to 40 times as great as would obtain with tetraethyl under the same conditions.

I cannot but wonder what is the situation in Russia with respect to the use of tetraethyl lead, as well as in the manufacture of tetraethyl lead and the prepara- tidn'of leaded' gasoline.'

The work of the first summer, carried out in the Dayton plant, resulted in a clinical characterisation of tetraethyl lead poisoning, a preliminary and rough interpretation of the nature and the approximate order of magnitude of the hasards of handling tetraethyl lead and certain halogen carriers, and the develop ment of certain principles for the oontrol of the hasards.

Tetraethyl Lead", American Journal of Hygiene, Volume 13 #2, March 1931

It is at least disturbing to find results about one-fifth of the former results as an average Furthermore if the recent figures of 0013 are correct then the Mexican-Indian data in which apparently all precuations against contamina tion were taken seem out of line as far as urinary lead is concerned although not as far as fecal lead Looking at the data on Page 316 of -the Normal Lead repi-iats* it seems incredible that the results from medical students down to tetraethyl lead workers could be due to contamination of sample* I cannot help feeling somewhat uncertain about the whole picture at present* Thanks very much for your courtesy in calling me in the matter# I wish that we had the opportunity of discussing it at some length

Looking at the data on Page 316 of -the Normal Lead reprints it seems incredible that the results tram, medical students down to tetraethyl lead workers could be due to contamination of sample.

There are a number of peculiarities, however, in the case of tetraethyl lead poisoning, andone of these is that the lead compound is lost from the body at a more rapid rate than in the case of inorganic lead compounds.

Tetraethyl Lead", American Journal of Hygiene, Volume 13 #2, March 1931

You are further right when you indicate that such lead as was present did not seem to be tetraethyl lead.