Water Jbr such purposes should not normally contain more than u.o2 or o.uj milligram lead per- liter, and it cannot be regarded as safe for use if the lead content is in excess of ^.l milligram lead per liter.

Jims 7 15S39 Captain E, L Bergquist Station Hosptialj, Air Corps Advanced Plying 'cliool, Kelly field, Texas* Dear Captain Bergquistj I have your letter of June 3rd mid will endeavor `to answer your questions to the best of z t j ability, 1 ETHYL FLUID contains tetraethyl lead and aa organic iialxd (in the avaition fluid tit halid is thyXensdibroisi&* and the propcsrtion of tetraethyl lead to othylss0 -*ait.roaid is that theoretically required for complete Gosbinatlom to fora lead bromid)* in the ocaabustiaa* it is boliaved that the tetraethyl lead turns to lead oxide and the halids to acid* these tssr then combining to form lead halid*, This material is largely volatil-. ized opt of the cylinder itssif and is partially deposited in the exhaust system and partially 'blows ant with the exhaust gases - 2 There is no evident?

Calculated ALAD regression Individual datum points: blood lead concentration o ALAD activity a DUP040002039 Figures 5, A and B Red cell ALAD activity of mixtures of normal and lead-containing bloods versus resultant lead concentration of the mixtures.

NL '(National Lead) Industrial Chemicals.

* NATIONAL LEAD COMPANY Boston. 800 Albany St.

Lead. 16.

Simplicity itself Soft paste is "shop lead9* Briefly stated, Dutch Boy soft paste white-lead is "shop lead"-r-pure lead-in-oil of a softer or less heavy consistency than regular paste whitelead.

This red-lead is the highest grade obtainable.

The tough, durable red-lead paint film stays elastic . . . expands and contracts with the metal under every change Paste and Liquid Red-Lead Fine, uniform, highly oxidized --there is no better red-lead obtainable than Dutch Boy red-lead.

When the electric motor lead failed, it required a maintenance team 9 man-hours at a cost of $12.50 per man-hour about three hours to replace the lead and rewrap it.

In the case of metal, the white-lead is applied over a red-lead undercoating.

The white-lead buyer is also a prospect for flat ting oil.

From my point of view, it would be entirely satisfactory to describe lead-poisoning as an intoxication produced by lead.

Al##lh. keg . of this "Lead" reduces to paint in six minutes ijr-- Dutch Boy soft paste white-lead gives pure lead paint at gallon-a-minute rate IX minutes, by the clock--that's all S it takes to make a hundred pounds of Dutch Boy soft paste ready for the brush ... to produce with it over six gallons of pure lead paint.

Everything Made of Lead" LEAD PIPE t LEAD TRAPS, BENDS, ETC. s SHEET LEAD s INGOT LEAD !