ThaoAt Mldgley, and his eoworfcers (J, Ind, End* <Jb*# 14 894# 1982)# employed la the research staff of the Oeneral Motors Corporation at Dayton Ohio# have discovered that oeriain eoopounds when introduced into the gasoline set as "Antiknock" or "Opmpres aionisers" in that they prevent the knocking in engines running at low speed or at high compression* The most important of these compounds are d&thyselenid* and tetra ethyl lead At the present tine the Dye Works Plant of 8 1 du?

November 1, 1987 Hugo Dunlap Smith, M.D.

November 1, 1987 Hugo Dunlap Smith, M.D.

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