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

With two exceptions the lead concentrations in these urine samples were quite high and were strongly suggestive of serious lead exposure.

Like you, I remember vividly trie unfortunate series of lead poisoning cases found in various Navy yards.

NUMBER 3 The Possible Toxicity of Lead Alloys.

Experiments on the Rat with a Lead-Tin- .Antimony Solder.

. _ occupies a; leading p.oitfctoa^ inr^yerl^marheS^'^ '- Looking. back on the tortuous path which" 'the^madstrjr'jiSSv^ treated in.

Tooele Miami Raritan Lead - Lbs.

lead: o 0 mn v/ithout ocouoatlo. el exposure to lead auci ten .'

Very truly yours, LEAD INDUSTRIES ABBCCIATION Robert L.

COPY EOSTON LEAD COMPANY Scranton, Pa.

Wildner, Vice-President, National Lead Company, 111 Broadway, New York 6, N.

Morley Morgana - (2> - October 27, 1948 "Vitol" containing lead, under these conditions,will compare with the vaporization of gasoline and lead under comparable conditions.

af lead on the e&ortsto* It 1 totter, of eaurse, not to ssafse Ito analyse# at all* t?

So far as the other lead alkyls are concerned, the only one I know that has been investigated extensively is lead tetramethyl.

We have seen one Instance in an adult and several in children, in which a patient with a high blood lead concentration was unable to secrete a high con centration of lead in the urine.