The lead pigments (W-l V-104) are somewhat larger than optimum size* which detracts further from their hiding power* The three white pig ments* white lead carbonate (W-104), zinc oxide (W-33, W-219* W-17 2;* and titanium dioxide (see chart)* illustrate a fundamental property of pigments* namely their degree of chemical reactivity with the ve hicle and with the acidic compounds which form in the film as it dries and ages* White lead and zinc oxide are reactive pigments* titanium dioxide is a non-reactive pigment.

Kehoe: I am enclosing for your information a revised copy of our proposed paper on exhausted lead.

Let me close off such discussion with me, by saying that the interpretations of the rate of the excretion of lead, itself, in the urine, under a variety of conditions, coupled with the determination of the concentration of lead in the blood, have eliminated the necessity for studying (for purposes of control of lead poisoning in industry), by the much less specific changes in the blood.

Dutch Boy White-Lead uted for interior!

A copy of the form should be returned to the |i Advertising Dept, for each lead received.

symptoms of lead poisoning, me cause of a strange, and THE' AREA, known as lead is a cumulative poison David A.

This occurred despite their total removal from lead exposure.

DEPARTMENT, How high is "up" for your white-lead sales/ FOR ten years the Dutch Boy white- white-lead profits.

It is my impression that the use of x-rays for diagnosing lead poisoning has been_performed mostly by pediatricians who have little knowledge of lead toxicology and who therefore tend to rely on a .tool which they already have in their possession.

Louis Lead and Oil Works, St.

LEAD A.

We do not, however, subscribe to the Health J^sp&rtsaent'g concern over the conservation, of lead-metal.

Despite this fact we have never been able to find evidence of significant lead absorption In the mixing personnel.

dAitto. 4 LEAD INDUSTRIES ASSOCIATION 0 CAST 41h STRICT NCW TORK IT.

LEAD A.