It now appears that the combustion of tetraethyl lead in an air stream led through a gas burner will give us what we want in the form of lead oxide, without other undesirable constituents.

Moreover, as X have indicated, it is never seen in tetraethyl lead poisoning, and so your statement of its "constancy" is not correct.

After the 1920s, environmental pollution by lead caused by the introduction of tetraethyl lead in gasoline became an alarming public health problem.

Lineberry has stated to the writer that no trace of lead was found in the blood tract, but bases his statement of lead poisoning on the fact that this mad has the wrist drop and partial paralysis, which he states could he caused from lead poisoning.

facts are known:except as bo the ooaurrcma or lack of ooearrnnea ; of IXInse# In the tsea working with ita* doooawl at the tine his Illness was contrasted# She fseta are detailed bo low in the asqnonoo of their oceuriHinco*. together wSMr the ovMohe ot% which tM dir^nool of fatal tetraethyl lead poisoning ros&s* According to Mr# TJurphy# concurred in by Mr# Carter, end I subsequently by Mr# P# 0* Ho Cranio#' one tank at the Hgeipa fcamin&X of Oktng fta'O ).!!

Further experiments needed to determine the age gasoline containing tetraethyl lead was reported by a Univer p day there's a special feature for ; fcra fans only in the World-Tele- and Sun.

The skin of the body is a protective covering, and as long as it remains in tact it does a good job except in the case of tetraethyl lead, which is used in blend ing gasoline and which is readily absorbed through the sldn. having a tendency to create changes in the nervous system.

Ludwig Teleky, who stated, "Neither absorption by skin (ex cept of tetraethyl lead) nor absorption by scratched skin. is. proved in workers, but in actors painting and rubbing in the whole body with white lead ointment."

The early experimentalworktn 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 would 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.

Gunn be contacted in instances of this kind* Pag 2 Mr* E. 0* Jones May 20, 1848 The third paragraph o t your latter would indicate that primary reference fuels containing orer 416 ml* of lead and "used for experimental purposes" may still be available. 1 hope that this is the proper interpretation since the use of primary or secondary reference fuels containing 6*0 ml* tetraethyl lead per gallon are not high enough i n knock ratings to properly bracket some special aviation fuels blends currently being supplied for engine durability tests by a number o f fuel companies* If our interpretation of the third para graph of your letter is correct that we still may use 6.0 ml. of leaded refer ence fuels for experimental purposes it would appear to me that we should not necessarily place ourselves i n the position of analysing each use for such materials but that these requests should be routed through Mr.

Ludwig Teleky, who stated, "Neither absorption by skin (ex cept of tetraethyl lead) nor absorption by scratched skin. ia. proved in workers, but in actors painting and rubbing in the whole body with white lead ointment."

If there was any accidental exposure to tetraethyl lead on the day in question, I should appreciate it if you would report it to me in some detail.

gated this accident and I discussed with their re presentatives the accident as they were particularly in terested to know whether v/e, at a ay time, had spiked these tanks with tetraethyl lead, our records show that this had never been none, however, the -uthyl Corporation felt that there was something unusual in connection with this accident as it was the first case on record where a leaded gasoline t-unu, used only as a storage tank, contained lead salts which gave off vapors fatal to workmen.

However, I believe that your article might have in sill fairness presented a more balanced and a more ob jective analysis of the use of tetraethyl lead in gasoline and the possible toxicological effects which it is claimed to impart by some, particularly Dr.

gated thi3 accident and I discussed ,ith their re presentatives the accident as they -aere particularly in terested to know whether v/e, at aay time, had spiked these tanks with tetraethyl lead, our records 'now that this had never beon cone, however, the athyl Corporation felt that there was something unusual in connection with this accident us it was the first case on record where a leaded gasoline tank, used only as a storage tank, contained lead salts which gave off vapors fatal to workmen.