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May 27, 1070 Mr.

Dr, D , V* Ccnw e ll The He rtz le r Cl i n i c Ha ls te a d , Kansas January 2$, 1 937 - T i t seems w ise to acquaint you somewhat more f u l l y re as o ns fo r fe e s ta te a e n t made in my re ce n t l e t t e r I am rath e r sure o f a y p o s itio n in the m atte r by re ason o f the fa c t th a t we have been in v e s t ig a t in g th is problem fo r some thing more than te n y e a r s , and by methods which I b e li e v e .a r e more e x a ct and more c r i t i c a l than those which have e ve r been applie d to any othe r ge n e ral le ad e xpo sure .

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Int er -Office Cor r espondence Et hyl Gasol ine Corporat ion 25 BROADWAY N e w Y o r k March. 8, 1929 Br.

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