% lead - 3.44# Pb. calculated as lead tetraethyl - 538.00.. mgs % lead tetraethyl - 5.38 % C.

P. salt, in which case 1 ce. of this solution used on an original 10 0 -cc, sample of gasoline corresponds to 0 * 1 cc* of tetraethyl lead (sp.gr. 1.65) per gallon of gasoline.

The method for the collection and determination of tetraethyl lead as outlined ; in the memorandum of Dr.

However, in the quantities in which tetraethyl lead appears in gasoline, there are at present no Indications that the tetraethyl lead adds in any way to the toxicity of the gasoline.

,pounds* For your further information alien me . . to refer you to a description of characteristic tetraethyl lead intoxication as described by rsy associate Dr* W.

IV) DISTRIBUTION OF GASOLINE CONTAINING LEAD TETRAETHYL.

We desire to add 2% by weight of tetraethyl lead to a coal tar creosote oil Dip and Disinfectant (9 lbs. tetraethyl lead per 50 gallons Dip) which is then emulsified in water using 4 pints Dip per 100 gallons water.

We desire to add 2% by weight of tetraethyl lead to a coal tar creosote oil Dip and Disinfectant (9 lbs. tetraethyl lead per 50 gallons Dip) which is then emulsified in water using 4 pints Dip per 100 gallons water.

D. 0010431 INTERPRETATION AND COMMENT The samples were so chosen and analysed as to portray. i possible, (1) the influence of external contamination of the hose with tetraethyl lead; (2) the extent of the penetration of tetraethyl lead into and through the rubber, thereby giving rise to contamination of the interior surface {and air passing through}; {3} the extent of the contamination of the inside of the hose at the \\ noint of the break.in its structure; and (4) the extant of deposits of particulate load (decomposition products of tetraethyl lead and/or other possible compounds of lead in particulate form) on tho outside and the inside of the hose.

IV) DISTRIBUTION OF GASOLINE CONTAINING LEAD TETRAETHYL.

D. 0010481 INTERPRETATIONANDCOMMENT The samples were so chosen andanalysed as to portray, if possible. (1) the influence of external contamination of the hose with tetraethyl lead; {2) the extent of the penetration of tetraethyl lead into andthroughthe rubber. ' S;/ ' ' thereby giving rise to contamination of the interior surface {andair passing \ \ through}; (3) the extent of the contaminationof the inside othe hose at the ooirst ox the break.in its structure; and {4) the extant of deposits of particulate load (decompoaitionproducts of tetraethyl lead and/or other possible compound of lead in particulate form} onthe outside andthe inside of the hose.

^MHHHpvorked with organic mercury compounds for a porl cjaoryears thereby presumably establishing his technical ability to handle poisonous materials*) His handling of tetraethyl lead was very meager, consisting of repeated attempts to synthesize tetraethyl lead by a variety of methods, most of which were unsuccessful* His note books are available showing the amounts of tetraethyl lend which he finally prepared.

Camming------------------------------- -------------History of tetraethyl lead in relation to gas e n g in e s , Mr.

Gorman knew of the possibility of tetraethyl lead intoxication.

The handling of tetraethyl lead was discussed with Mr.