First, they recommend the intravenous use for "pro phylaxis against symptomatic exacerbations in chronic lead poisoning."

I am the more impressed by the truth of that statement, in view of my recent examination of your contributions to the subject of lead poisoning as a member of the panel representing the National Academy of Sciences.

They are quite willing to add extra pages to a regular issue in order to accommodate the papers of the meeting on lead poisoning.

I am sending you, for whatever use it may be to you, a copy of a memorandum prepared some time ago by my associate; Dr> Machle, as a consequence of our experience, in dealing with the problem of tetraethyl lead poisoning.

However, X am sorry that this occurred and I feel doubly regretful, not so much because of ray apparent discourtesy, (no such thing was intended), as because it would have been profitable"to me, at least, to have continued ouf discussions, I am the more impressed by the truth of that statement, in view of my recent examination of your contributions to the subject of lead poisoning as a member of the panel representing the National Academy of Sciences.

I am the more impressed by the truth of that statement, in view of my recent examination of your contributions to the subject of lead poisoning as a member of the panel representing the National Academy of Sciences.

Kehoe, Thank you for your very interesting letter about lead poisoning.

I am sending you, for whatever use it may be to you, a copy of a memorandum prepared some time ago by my associate; Dr> Machle, as a consequence of our experience, in dealing with the problem of tetraethyl lead poisoning.

We have plenty of work in the laboratory and actually we can not afford to take on any additional work at this time, nor do I consider it advantageous from our point of view to have numerous suspected cases of lead poisoning coming to our attention for study.

In searching through our f ile s I have not been able to lo cate the h isto ry under the index heading of lead poisoning nor have I been ab le to find any c r o s s i n d e x which w o u ld g iv e me a c l u e . .As I to ld D octor Edgar in our c o n v e rsa tio n , our im pression at th e tim e th e p a t i e n t was h ere was t h a t th e nervous system symptoms were a t t r i b u t a b l e t o t e t r a - e t h y l l e a d .

This sounds like one of those rather typical affairs in which the man in question has not had adequate clinical study and in which, therefore, the eas,> way out has been to make the diagnosis of lead poisoning.

My experience leads me to believe that the solvents in which the aluminum is suspended are more dangerous than the aluminum, and there have been here and there very defi nite difficulties in the use of paints of this kind in which the solvent 13 butyl or amyl acetate.

On the other hand, lest there be any misunderstanding, I should like to make it quite clear that although I should be In terested In malting further observations, and am willing to do so, I am suggesting this course only because I think It Is definitely in your interests to know certain things more certainly than they can be discovered from the observations made up to the present time* We have plenty of work in the laboratory and actually we can not afford to take on any additional work at this time, nor do I consider it advantageous from our point of view to have numerous suspected cases of lead poisoning coming to our attention for study.

The Medical Department o f th e Army h as h e sit at e d t o sp ecify t in lin ed lead tubes fo r ointments due to th e p ossib le dan ger o f con tam ination and subsequen t le ad poison in g.

Much information has been added to the subject of heavy metal poisoning, especially to the elucidation of some of the nuances in the behavior of lead and mercury, during the past few years, and it is indeed important to industrial hygienists to know where we are in these matters, at present We are among the group of people who must do much of the working and thinking for the people of this country in the matter of the occupational and environmental problems which are presenting themselves so urgently at present.