A total balance of lead into the system and lead out. 4.

I have already told you my point of view about the use of de-leading procedures for diagnostic purposes* In my opinion the best measure of the lead content of the body is to study the lead excretion under the most nearly normal physiological conditions Here available data are very reliable.

Draft recommends a "comprehensive study" of potential lead-producing stationary sources to "completely characterize" the size and types of lead particles produced, and also recommends additional studies of lead effects in children and the ,chemistry of lead in the environment

Obviously, if there ia no lead absorption* tho factor of susceptibility to lead decs not enter into tho question.

Moreover, the leaded gasolines such as Baseline which are not sold under the name of Ethyl Gasoline, contain smaller amounts of lead than do the premium fuels known as Ethyl Gasoline* K 0021745 z For these reasons I do not believe that you need have any anxiety about your health from the point of view of lead poisoning# It is highly improbable that you have absorbed appreciable amounts of lead# The symptoms which you describe are associated with a variety of conditions# and indeed they are not unusual during or following periods of hot# muggy weather# I would advise that you ignore these symptoms of fatigue# If# however, they continue or progress and especially if they are associated with a loss of weight# it would be the better part of wisdom for you to consult a physician not with the idea of recognizing lead poisoning but with the idea of determining just what your physical condition is in relation to any one of a number of chronic infectious processes# Replying somewhat more directly to vour questions as to what are the early symptoms of lead poisoning# it should be said that one would not expect the symptoms of lead poisoning from the handling of Ethyl Gasoline to be different in any way from lotid poisoning developed In other lead trades* However# since I repeat that there have been no cases of lead poisoning from the handling of Ethyl Gasoline# it becomes apparent at once that it is not possible to describe this condition in any other than in terms of lead poisoning In general# There is no one symptom or combination of symptoms which are characteristic of lead poisoning alone* Thus it requires a careful and painstaking examination and chemical tests to establish with eny certainty the existence of early lead poisoning# If the above discussion does not answer your questions satisfactorily and if you wish to obtain any further advise from me about your general health# I should be pleased to have you writ me# Meanwhile# I should suggest that you make It a practice to use gasoline which does not contain lead for your shop work since such gasolines have no advantage for your purpose# and since thereby you will 3pare yourself any anxiety as to lead absorption from this source# In order to obtain such gasoline in the present market# you should make it a point to avoid all colored gasoline* and purchase a water white gasoline.

Lead Hyg.

"It is expected however that Anaconda may desire to make shipment upon such orders from points other than 3ast Chicago, and it is agreed that upon any order for white lead given by Glidden, Anaconda may, in its discretion, make ship ment of the lead ordered either in whole or in part from 3ast Chicago or any other point or points at vdiich Anaconda Shall at the time have a stock: of its white lead unsold and avail able for shipment.

A Quarterly Meeting of the Board of Directors of the on48 lead Products Company was held at the office of the Com- . 25 Broadway, New York City, Tuesday, June 20th, 1922, at 0tclock P.

It isthen argued that blood lead level decreases cannot be explained by lead in paint or lead in the diet and, being unable to think of other lead sources or another variable that might correlate with gasoline lead use and blood lead levels, it is concluded that the decrease in blood lead levels is caused by the decrease in gasoline lead use.

A chemi cal change takes place and converts the lead acetate into basic lead carbonate, or, as we call it, white lead.

Joseph Lead Co.

"Lead."

Our manuscript on lead, to give lead some useful publicity, is complete.

Although this pig mentation is lead free, zinc chromate/ does not rate as well as lead chromate in Acute Oral Toxicity tests (AOT-LD60).

Joseph Lead Co.