The method is entirely satis factory when sufficient lead is extracted so that the con centration of lead in the solution to be polarized is at least of the order of 1 microgram of lead per ml.

My own experience leads me to believe that the association of arteriosclerosis with lead poisoning has resulted from the fact that persons with vascular disease are more prone to develop lend intoxication than are normal persons.

FEDERAL - The federal regulations at the present tine, state that | paint may contain up to It lead and be considered lead free. \ EFFECTIVE JANUARY 1, 1971 the new regulations will make it necessary j for all paint products to contain no more than .51 lead.

Q-6: Didn't one of the originators of tetraethyl lead die of insanity caused by lead poisoning?

ALLIED RESEARCH BULLETIN NUMBER RC-59 TiEITE LEAD COMPARATIVE DUfUBILITI OF LEADING BRANDS Adams May 27, 1940 ALLIED RESEARCH LABORATORIES CHICAGO, ILLINOIS N12522 0007-SWP-000006829 -55V i --- ' *-2*2--- :-- Bhlta Lead - CoE-paratlve Durability of Leading Brands ' flonsral Statement .

Jefferis: On lead poisoning in childhood.

The ordinary man whom we have studied' prior to the ingestion of lead has about 2.00 milligrams pf lead (or slightly mare) per 100 grams of whole blood.

The process by which the lead acetate was applied on the fur (some.of it may have been "in" the fur in a loosely combined manner), would seem to have been very crude to have provided such seemingly excessive quantities of the lead compound. 3.

fleant facts reported thus far are: (a) that lead oxide in a state of subdivision represented by a median size of 0.05 microns, and in the concen tration of 0.075 mg. per* cubic meter, has been breathed for 7 hours per day on 5 days per week for over a year, without symptoms or signs of lead absorption, other than those provided by chemical analyses of blood and urine; (b) the retention of lead in the lungs under these conditions | was approximately 35 per cent of that Inhaled, the ; remainder appearing in the expired air, while that retained during the inhalation can be regarded as being absorbed into the body quantitatively; (c) the metabolism of lead underwent prompt changes, In that the concentration of lead in the whole blood rose prompt ly and reached the level of almost 0.0^5 mg.

red-lead.

generally known, namely,, that.in the period of nine . 1 year during which leaded gasolines have been used con- .

Tel: +1 713241 2521 Fax: 3325 Email: pmclegg@shellus.com Internet: http://www.shell.com/chemicals SH ELL-MCCLU RG-054908 BHSC Consortium Companies Upper Management Lead for Contacting Candidates Consortium Company BP Management Lead Management Oil or Management Lead Position Chemical Lead number Conoco ChevronTexaco ExxonMobil Shell SH ELL-MCCLU RG-054909 BHSC Consortium Companies Upper Management Lead for Contacting Candidates Consortium Company BP Management Lead Management Lead Position Oil or Chemical Management Lead numbers Conoeo ChevronTexaeo ExxonMobil Shell SHELL-MCCLURG-054910

Clinical signs and symptoms result from the inhalation of lead fume and dust.

Vutc6 "Soy PURE WHITE LEAD PAINT Dutch Boy Pure White Lead Paint, ready-mixed for exterior use, is guaranteed to contain no pigment except strictly pure white lead.

But the paint should Dutch Boy red-lead is pure red-lead.