in ' &7 determine the3 lead dontjpnt&pf the air. accord 3 hrboedu re?

The only reason for suspecting that lead might be a factor is that increased porphyrins have been reported in cases of lead poisoning.

The lead compounds as a result of combustion, oxides and lead sulphate, offer a serious cleaning problem after a period of operation.

The result is little more than nothing, beyond the well-known figure for the tolerable concentration of lead (without reference to any compound, or dimensions of particle, but presumably the worst compound, exclusive of the lead alkyls, and the most dangerous degree of dispersion).

LEAD INDUSTRIES ASSOCIATION, INC. 292 Madison Avenue New York, New York 10017 National Lead Co.

Yet today this low price for paiat you make with Dutch Boy White-Lead is a solid fact.

Louie, 722 Chestnut SL; San Francisco,235 MoatgomerySt.iBoston, National-Boston Lead Co., 800 Albany St.; Pittsburgh,National Lead & OilCo. ofPenn sylvania, 316 Fourth Ave.; Philadelphia, JohnT.Lewie & Bros.Co.

Bower: It has come to my attention through somewhat circuitous channels that two men, French Canadians, father and son, were zander your care in the hospital apparently suffering from chronic lead poisoning as the result of contact with clothing repeatedly cleaned with gasoline containing lead.

I have tried to convey the idea that in the efforts of many years to obtain the necessary information about the behavior of lead, for the purposes of understanding the common environmental conditions of life in this period (beginning in the late twenties) with respect to lead, as well as those which involve the hazard of lead poisoning, the present!

Febru ary 5, 1943 LEAD h y g i e n e a n d s a f e t y LLig-i itt fray 7 To Members o f th e Lead I n d u st r ie s A sso c ia t io n ; .

Bookman, 2 pt. leaded N10014 PNYCOOCOOOA6

r7 LEAD INDUSTRIES ASSOCIATION eo EAST 42 NO STREET NEW YORK 17, N.Y.

WHITER than SNOW HE superior whiteness of Anaconda TElectrolytic White Lead can be even Lead we recommend vour examination of our three distinct grades.

The lead concentration in the blood is definitely abnormal, being indicative of abnormal lead absorption sometime within the past several months.

Navy have had a considerable background of experience in using aviation gasoline containing 4.5 cc of the tetraethyl lead.