The presence of lead in a few parts per billion of material can be demonstrated in this way*.

DIRECTORS - LEAD INDUSTRIES ASSOCIATION 1935 B.

All homes in Chicago with children under the age of five years be tested for lead. 2.

Unrealistic lead times.

The public's faith in white-lead as the model paint pigment has been justified over and over again.

Looking at the data on Page 316 of -the Normal Lead reprints it seems incredible that the results tram, medical students down to tetraethyl lead workers could be due to contamination of sample.

Enrichments of the well water with nutrient media showed growth from both wells 31(HIGH LEAD) and 21(LOW LEAD).

Boston Lead Co.. 8m> Albany St..

Lead)... 2848 (Pigmcnts.are strutJy pure Red Lead as4; strictly pert White Lead equal pwtt The economy in' ihe use of Steamship Lead on hulls', holds, smoke stacks; ttcr/hftotfl that it docs not get karri M tAc package seqoently there is no waste.

As part o f this study, I fear we w ill have to do at least a few analyses o f lead in hair. 1 have designed the study in such a way that we can compare lead in hair, ALA, blood lead and EDTA m obilization simultaneously in a small group o f patients.

You are further right when you indicate that such lead as was present did not seem to be tetraethyl lead.

Sao Francisco; National-Boston Lead Co.

Joseph Lead Co.

It would be expected that the extraction of lead from the surfaces of these articles would diminish following more and more prolonged use of these articles, and eventually the amount of extractable lead would become negligible.

As soon as you have finished with the reprints on lead, I would appreciate your returning them.