Frankly I would not even xperf ent with human subjects on increased lead intake except ?

Lead and linseed oil.

Louis Lead & Oil Works, St.

I assume, however, that you are dealing with either the vapors of lead or finely divided dust suspended in the atmosphere.

However it is quite clear that the relief which occurs promptly after calcium administration is not due to a change in the blood lead or the urinary lead.

Thus, we are now entirely certain that the absorption of lead from exhaust gas is an insignificant factor in. general lead absorption.

That Its high calcium content does anything significant In relation to lead absorption or lead excretion has not been proveu.

Thus, we are now entirely certain that the absorption of lead from exhaust gas is an insignificant factor in general lead absorption.

A very satisfactory clinical description of lead poisoning can be found by referring to "Lead Ab sorption and Lead Poisoning", by Legge and Goadby, or, by referring to the work of Osier, ''Principles and Prac tice of Medicine", 8th edition, published by D.

Unfortunately my supply of reprints of articles which, deal with a series of lead trades is exhausted* These papers will be found in the Journal of Industrial Hygiene for September 1933 (Volume l^)* Some of the more important recent articles on lead hazards in dusty lead trades will be found in the Bulletins of the United States Public Health,.

Rather we have been much more con cerned with the general problem of industrial lead ab sorption and lead Intoxication.

Wiseman, of the Department of Iviedical and Surgical Research at Ohio State Univelrsity, appear to concur with me in these findings, I have collected a number of precedential instances grouped as follows: Lead poisoning From Apparently Insignificant Exposures Lead Poisoning and the Capillaries Lead Poisoning and the Nervous System Lead Poisoning and Gangrene I am enclosing two copies of each of the above memoranda herewith, with the suggestion that the originals be duly filed with the Commis sion.

Product: Lead ores (Par. 391), pig lead and metallic lead products (Par. 392), lead pigments (Par. 72), and foil (Par. 372 and 397).

Joseph Lead Company American Smelting & Refining Co Eagle-Picher Lead Company Hecla Mining Company National Lead Company Reynolds Metals Company United States Smelting Refin ing & Mining Co.

National Lead Co.