Mc Bride had been conducting State wide inquiry into the manufacture, use and transportation of tetraethyl lead.

Tetraethyl lead alone is absorbed through the skin.

Ve know that the material will be contaminated to some degree, referring to the analytical results on the scale and sludge, you will note that the bottom sludge contained appre ciable quantities of tetraethyl lead, somewhat smaller quantities of decomposition products of tetraethyl lead and a very considerable amount of inorganic lead, some of which may have been derived from tetraethyl lead, but which may have been largely or almost wholly litharge.

Even with such a toxic substance as lead tetraethyl he states (Tetraethyl Lead Poisoning.

If this was in any way connected with tetraethyl lead, Mr.

Since problems of toxicity do not differ substantially from those presented by Tetraethyl lead, the same safety recommendations will be applied in respect of manufacture and distribution as apply to Tetraethyl lead at the present time.

Since problems of toxicity do not differ substantially from those presented by Tetraethyl lead, the same safety recommendations will be applied in respect of manufacture and distribution as apply to Tetraethyl lead at the present time.

If this was in any way connected with tetraethyl lead, Mr.

Machle, Dear Bill: Thanks very much for your letter of December 26 in connection to du Font's using tetraethyl lead for the manufacture of lignosan and ceresan.

However, it is fairly certain that the contamination originates from tetraethyl lead that has been added to gasoline and that the lead is eventually being breathed and eaten by stock and people.

Lead calculated as"Tead tetraethyl ( $ lead tetraethyl -B.

For this resson the hose will be cut longitudinally and its inner surface inspected, inthe hope of finding the source or sources of vaporisation :jf tetraethyl lead withthe air stream.

Tetraethyl lead itself is a compound of low volatility and is absorbed directly through the skin* The absorption is generally interfered with by dilution in gasoline* and if the dilution is as high as 1 part of tetraethyl lead to 1000 of gasoline# skin absorption is completed prevented* Thus animals exposed for months to daily contact with leaded gasoline do not accumulate lead in their tissues# and when killed and analyzed after such exposure* do not show lead In greater quantities than can be found in the tissues of normal* unexposed animals* Likewise the volatility of gasolines Is so much greater than that of tetraethyl lead that the vapors arising from tanks do not contain appreciable quantities of lead until between 1|X) or 50 per cent of the gasoline lias been evaporated* Thus if half the gasoline is evaporated off* there will be at least 98 per cent of the lead loft behind in the remaining gasoline.

'It should be re ing by lead than men, and in lead l ; membered that lead tetraethyl is the poisoning from drinking water the pro- f only known lead compound which is so portion of women (especially pregnant ji readily absorbable by the skin,, and it should also be borne in mind that once Methyl petrol has dried upon the human skin, washing* the contaminated surface even with kerosene is the reverse of ; being dependable for the purpose of re ; moving the deposited lead tetraethyl. ' I The action of lead tetraethyl upon the animal body differs in no way from that i of other lead compounds which are proved notorious abortives, such as lead in combination with oleic acid, or >other higher fatty acids, whether sold as diachylon or under any other \designation. .'

That is to say that the relationships between the lead concentration in the blood and that In the urine are very different In tetraethyl lead poisoning as compared with inorganic lead poisoning.