The more Important ones are litharge, Alt* lead and lead alllcatos.

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Its' called PICA and It leads to lead-poisoning. 6.

It is lead.

SHEET LEAD Made from standard accepted brands of prime lead and lead alloys accurately rolled to specifications of thickness or weight.

The tissues of the anim als were analysed to determ ine th eir lead content by means, of methods which we have employed previously in sim ilar experim ents on the absorption of lead out of leaded gasoline* Experimental Observations _ ' I.

It is lead.

Ar2 Lead v * * _ .

More specific and sensitive means of detecting lead absorption Eire found in determinations of the lead content of the urine and the blood.

SHEET LEAD Made from standard accepted brands of prime lead and lead alloys accurately rolled to specifications of thickness or weight.

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Lead By O.

Perhaps you should chide your infor mant for iris naivete in physiological matters, but we can let that pass* He should know the facts in his own field better than to doubt that lead is volatilized at the temperatures occurring in the oxy-acetylene flame* The temperatures here are compounds begin to be avpoplraotxiliemaattelyte2m7p0e0ratuC,reswhailreoumnadny50l0e,ad lead oxide bolls at "white heat" (about lfj00oC, and metallic lead bolls at about 1525C* Thus the lead oxide literally bolls off from the melting surface, and is thrown into the air in the form of the oxide in a finely divided state* These particles may be inhaled and are fairly readily absorbed from the pulmonary surface* (That lead must exist as a gas to be absorbed by the lung is indeed a new and delightful hypothesis* I could wish it were true, for if it were, industrial lead poisoning would be largely non existent* It is well known that finely divided metallic lead, lead oxide, lead carbonate, and indeed, praotially any other lead compound suspended in the air will cause lead intoxication in men and animals permitted to breathe such atmospheres* It is also generally accepted that lead 00G75oY - 2- poisoning 111 occur among human beings exposed to atmos pheres containing lead compounds in particulate fora In excess of 1*5 to 5.0 mg* Pb per 10 cu* m. of air.)

showed low lead levels.

(c) Is a high urinary lead a measufe of lead excretion, and a good thing?