. - 0^ (Benzene) 2.277 0 (cell const*) 0^ (leads) ^ ^ These two equations may be solved simultaneously for the two unknowns - C, the cell oonstant and 0^, the capacitance of the leads* The dieleetfic oonstant of an un known liquid, x, is then . . y'.. \ '

Lead All Poisoning engaged in spraying red lead paint wear approved painters Very little sprating of red land paint is done fume respirators where it is found necessary to perfora prior to welding hoverer walding on rad lead painted surfaces the worker vaare an approved natal fuae respiratora In addition thirty 30 new Coppus Mowars rotin have been delivered and are in mas to provide the necessary , .

Johns Our attention has recently been directed to the fact that your company in engaged in the development of a stove or burner designed for use with loaded gasoline# A3 medical consultants for 'the Sthyl Casol5.no Corporation, we are naturally interested in any inve31igntIona of this type end arc writing you to got such information as you feel free to impart nemoerring the nature end mechanic nl details of the stove# Since Mr* Colemanfa last communications with Or# Keboe and Dr. ddgar concerning the use of leaded gasoline in stoves, the quartermaster Corps of the united States Army has developed a satisfactory filtering device for use with the rxay field range# This device permits the use of gasoline that contains up to 3 <# of load per gollon and is cufficiently complete*in the removal of lead to avoid any stoppage of burners or deposits# Moreover, the degradation of lead, in the generator tubs and subsequent filtration is so complete after the stove is in operation that no hygienic hazard is created by its us.

8 in place of H-259 Hashed oil mid require about double tfc lead drier in order to obtain satisfactory drying., In the origin al laboratory work, the use of straight yp-1428 Lead laphthanat resulted in higher solids content and cost, m that it appeared necessary to include sea IIS- X689 t lower the solids content* .Recently, in anticipation of a shortage f litharge wMeii is needed in the laaaufaetup of '$0-1689, a number of papal lei batches have been mad in the Philadelphia plant using th specified blend of TD-I689 and TO-1%28 in one ease, and IP-1428 as the total lead in the second ease.

Neal Subject: Lead and Arsenic Tolerances 1.

This situation ties, particularly with the special xide or White Lead that move rather conditions.

FF Titanium Oxid 35^ leaded aino oxide Asbestine Pittsburgh #500 Oil Bodied liasad oil Lead Maphthenate Manganese Napfctheaate Mineral Spirits Total - 100 gallons 414 333 112 13 5 _J1 1544 W-16 W-18 W-4 Im; FF Titanium Oxide 35$ leaded ziao oxide .

fer a certain type ef Lewis Red-Lead, which will produce a Red-Lead ef better paint waking quality.

You mention certain unusual features of lead exposure in this easel, and that in Cincinnati you are now analyzing data that has been collected.

I have chosen this subject rather than an extension of the vork on the metabolism of lead, partly because the data on lead can not be Worked up In time, and partly because I do not vant to confine myself entirely to the subject of the lead meta bolism | I a m very glad that the meeting Is to be held and I heartily approve of the arrangements for combining the three meetings.

Endarteritis Obliterans in Worker Exposed to Lead.

Former White Lead For* Bast Chicago.

The levels of lead in the urine and blood are of the same order that was found in 1940* These levels are those found among men Who are exposed to lead, but with insufficient exposure to give symptoms, hone of the men had symptoms or signs attributable to lead poisoning.

Cleveland, Ohio, for lead and arsenic analyses.

There have been some difficulties from time to time as the result of the anxiety of workmen concerning the danger of handling gasoline, This problem# I believe# has been studied with such critical care that we can not state with certainty that thorn are no dangerga of lead absorption in connection with the handling "of gasoline containing lead in conncotIonions up to and including 4 oo per r i JJ 4* Aautrlean gallon* dome observations haw also been mmIs os gasoline eontaitting 6 ec per Amorloan gallon* and hero too we feel Quite certain that the^e art m dangers either & the result of skin contact with the gasoline* or the inhalation of its vapors.