The reason X am insistent upon this thesis is that the freedom of workmen front the threat of illness (lead poisoning) in the lead industries depends upon our having a threshold, value which is substantially never failing, and yet feasible to achieve, one. bolow which no one ever becomes ill of lead poisoning.

The reason I am insistent upon this thesis is that the freedom of workmen from the threat of illness (lead poisoning) in the lead industries depends upon our having a threshold value which is substantially never failing, and yet feasible to achieve, one below which no one ever becomes ill of lead poisoning.

Vincent Guinee, Director M the of Lead Poisoning ConA in the New YorfcCity health service adminiiwation, now heads a department that spends 5812,000 a year on screening 10,000 children a month for lead poison ing -- caused chiefly by children bein^g^contact withjaunt containipsrlead.

Su mma r y a n d C o n c l u s io n s A previously unrecorded physical sign in the diag nosis of incipient lead poisoning is described.

LEAD INDUSTRIES ASSOCIATION I O KA*T ASM* arHIKT w*w row* it . k .t . txs* Sit, 19$9 LEAD fflBim and sx/wrKjmnr ToTTD------------ To the Hceten of the Load Industrie# AsaoelaUont two quit* disparate aeeloauree com to you with this bulletin.

This is recognised now as the principal causa of childhood lead poisoning.

.: A KNACKERY SURVEY OF LEAD POISONING INCIDENCE IN CATTLE IN NORTHERN IRELAND.

ls due to gasoline Intoxication, Be that as It may, this Is the first instance of a case in which the diagnosis of lead poisoning might be justified, if we except the case that occurred in Pittsburg some years ago which I felt was certainly not lead poisoning* .

Edsallx I have reoeived your letter of the 27th, en closing the reports upon the investigation of lead poison ing, September 1, 1921, to March 1, 1923.

None of the signs of chronic poisoning by inorganic lead are present there are no focal'tfneurological signs, no colics, no lead line on the gums and no characteristic blood changes.

This is recognised now as the principal causa of childhood lead poisoning.

poisoning if it Is caught in time

A cony of pour letter of March 3rd addressed to *r* >* A* Dnyder of the Ohemplln HofInins Company has been referred to me as medical consultant of the Bthyl Casollne Corporation* My associate and t have been studying the problems associated with the handling of leaded gasoline over a period of years* . and it is quit fair to say that w have never found any evidence that gasoline containing tetraethyl lead in capable of producing any injury sore than that associated with the effects of the gasoline itself* X have no doubts you are nail aware of the fact that gasoline applied to the shin say orduo burning and irritation* at least for brief periods of tly&* d* pendent upon the duration of'contact mid other conditions such 88 the presence of clothing etc* Sotinea* and particularly under sdakfed clothing* the skin may he so injured as to not heel promptly and it say become infected If It is not properly cared for* It seems probable from your letter that this is what occurred lu your case* and If this Is the situation* tte seems probable that by this time It has. cleared tip to a very largo degree* or perhaps altogether* 'These injuries sometimes require medical care* and in as much as you have consulted a doctor* X would osrpoct that by this time your trouble is well under control* if this has not occurred* % 'should b very glad If you would write me telling vm just what is your present condition* It would be still more useful if you would have year doctor srifc to me* describing your condition mad letting me know whet he has done for your treatment* 1 shall be glad to give him any advice or assistance which X can 0.3 based on our experience with this type of ailment* I can assure* however* that the type of contact with leaded gasoline which you describe in your letter* could not hove resulted in lead absorption or In the production of lead poisoning* It baa been quite veil established both by oxporiiaanfcai work ami by the ox** perlence of fee last thirteen years that lead poisoning 2 does not occur as a consequence of prolonged osr: oauro to gosol'no containing Sctrcefchyl lead* As a matter of fact, Mr* Snyder was quit right lt stating that none of the employees of his eonpany had over suffered lead poisoning as s result of hand!

These have grown out of our exten sive work on industrial lead poisoning, its diagnosis and prevention.

Mechanism of delta-aminolevulinic acid (ALA) accumulation in lead poisoning.