The preference that exists for NATIONAL LEAD COMPANY 111 Broadway.

Evans Lead Co.

National Lead Co.

She now makes this solution; of lead acetate up to a known volume.

Eagle-Picher Lead Company Hecla Mining Company Metals Refining Company National Lead Company Reynolds Metals Company St.

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P* Hugo General Superintendent Associated Oil Company Avon, California Dear Mr* Hugo:- Your letter of September 5feh concerning an employee of yours who has been diagnosed as having progressive muscular atrophy, has been referred to me from the Hew York office of the Ethyl Gasoline Corpora tion* As a result of years of experience with the conditions in testing laboratories, it seems almost certain that there is little or no opportunity for significant lead exposure in work of this type* Therefore, unless the occupation of your employee differs materially from that of a large number of other men who have been engaged in this work, there is no basis in his occupational exposure for considering seriously lead as a cause of his present Illness* Progressive muscular atrophy is a clinical condition which has been known for some time and there is no good reason for assuming the presence of such a factor as lead in the origin of the condition* It must be admitted that we do not know very much about the precise background of ita occurrence* It Is also true that lead poisoning is likely to result In muscular damage and in atrophy of certain groups of muscles* In the case of lead, the picture is usually quite characteris tic and it should be possible to make a differential diagnosis* We shall be very glad to do what; we can to establish a diagnosis In the case of this man* One of my associates will be in California in the course of a regular trip for the purpose of examining the personnel at the mixing plants* I shall turn your letter over to him and he will be glad to make an examination and obtain as much clinical information as is possible* In the mean time we should be glad to make analyses on the blood and excreta of your employee in order to see whether he shows any evidence at present of lead absorption* It may or may not be wise to do this at present slnoe it may be that his exposure was discontinued some months ago, in which Mr* Y?

Evans Lead Co.

In my opinion there is no advantage, and there are definite disadvantages in the use of lead-containing gasolines for a variety of purposes, but so far as I can see, there Is no danger of lead poisoning involved in the U3e of such gasolines in stoves, lamps, blow torches etc.

It is also true that lead poisoning Is likely to result In muscular damage and In atrophy of certain groups of muscles.

In a long series of tests conducted by a leading Southern railroad, the "Saucer Test" proved that pure red-lead outlasted the other'paints tested by 4 to 1.

She now makes this solution; of lead acetate up to a known volume.

Eagle-Picher Lead Company Hecla Mining Company Metals Refining Company National Lead Company Reynolds Metals Company St.

There are certain things in his con dition however, which suggest that it may not be lead poisoning, and on account of these facts, plus the fact that we have no evi dence which would lead us to believe that he has had a significant exposure, I have not been able to arrive at a diagnosis of lead poisoning.