$hile the gasoline may evaporate to a point where there is no health or fire hazard from the gasoline itself, the tetraethyl lead remains behind on evaporation.

The early experimental work In this laboratory indicated the character of the hazards of the mixing operations and of all other operations associated with the industry* It became apparent that the compound tetraethyl lead was an exceedingly treacherous lead compound and that It wohld be necessary to rigidly regulate the handling of the material* From time to time* therefore* we have issued instructions based on the continued observations of Industrial conditions* Tie have improved the equipment through the engineering facilities of the Corporation in such a way as tomake the industry safe.

Yi/HY CONTINUE WITH TETRI ETHYL LEAD?

He checked his special classification lists ana while he did not definitely claim that tetraethyl lead or ETHYL mixing nos listed as being a special rate nevertheless he expressed the opinion that the above described action had taken pla.ce.

He checked his special classification lists ana while he did not definitely claim that tetraethyl lead or ETHYL mixing nos listed as being a special rate nevertheless he expressed the opinion that the above described action had taken pla.ce.

He checked his special classification lists and while he did not definitely claim that tetraethyl lead or ETHYL mixing nos listed as being a special rate nevertheless he expressed the opinion that the above described action had taken pls.ce.

Suffice it to say, however, that it has been known for more than twenty years that there is no change in the urine Coproporphyrin in response to the absorption of tetraethyl lead, even in fatal poisoning.

Ploase explain, the difference between tetraethyl load and tatransthyl lead, and the advantages of both?

The exposure of persons to leaded gasoline is noTToccupational hazard, and under the conditions of its handling,the absorption of tetraethyl lead through the skin cannot occur to an appreciable degree.

., Beacon Falls Connecticut, wrote re- questing 25 pounds of pure tetraethyl lead.

It should be realized also that the concentration of lead in the blood of persons exposed-to tetraethyl lead is low and that the contemplated obser vations may Just about as well be carried out on normal individuals.

It should be realized also that the concentration of lead in the blood of persons exposed* to tetraethyl lead is low aud that the contemplated obser vations may just about as well be carriod out on normal individuals.

., Beacon Fa. s, Connecticut, wrote re- questing 25 pounds of pure tetraethyl lead.

A further danger exists from the inorganic lend compounds in the water bottoms and sludge re sulting from treating operations other than tetraethyl lead* If IS J&FAS3&T fTOBUTORS, flLA?

Professor Preti's examination would, seem to confirm the views expressed by yourself and Dodds namely, that the complaint from which this man is suffering has no connection with tetraethyl lead.