Editor -- H.

(1) Cue finding and prevention of occupational diseases and poisons. (2) Case finding of non-occitpational diseases, particularly that group known as degenerative diseases which have the highest death rate, such as diseases or the heart and blood vessels, cancer, respiratory, kidney, etc.

6Vortloat-haft 1000-gpm turbine daopwelt pump operating under 29S-ft total head, and driven at 1760 rpm through an angle gear by 100-hp dleael engine STANDARD MATERIALS IN VERTICAL TURBINE PUMPS PsrU Bowl* Iraptllan Wnrlnf tl*|i Bowl baartan Pampahaft Bowl Assembly Usutlsf Cti Iren Broan or cut Iren Bronte Bfeoii or rabbit Suinlou ttttl Cilatae pipe LTnnbift and couplEnti 6hi(t-indeila| tuba Bntloilnf-tube itabillnr Opm-Hna ahalt*baarlot tatalnar Bnctend lloithaEi bnrlo(i Opaa llaethift beorlns* Opao llnaibift alnva Cottnna Assembly 8tl Still Stiil Rubbu er broon Brenie Drenn Rabbit Monil or lulnlin itnl Hetil Assembly Dlicturfi bud Btuffia* be* 8tiAn|*bi (land Top ihaft: enclo*cd-*hft eomttuelieo Top ihilt: eptn-thi(t conttfuctioa Cut Iroa .

Control Boiler Feed Water by grsmmlflg control sets sequence ot IgnlUoa and foe) systems.

HOPPES FEEDWATER HEATERS Deaerating and Non-Deaerating I Hoi Waler Storage Healers Low Pressure Closed Type Feedwater Heaters Instantaneous Water Heaters Steam and Oil Separators ** Cast Iron Exhaust Heads Blow-off Tanks HOPPES Manufacturing Co., Inc* EttablUhed 1881 SPRINGFIELD, OHIO WARNING!

%r.

WFP/MB W.

July 24, 1944 AIR MAIL K r , T .

J .

May 18, 1944 19 Johnaon bronze Company, 'lev Coo ole, Pennay1 /ania.

April 15 , 1949 Mr.

JLeaidl i&i r f i AosdMiSiailiaMa CLINTON M.

GEOROE H .O ETW ILER C H A R L E S W.

ETHYL CORPORATION INTER -OFFICE correspondence TO Fr.

'X V,.