FEDERAL SECURITY AGENCY U.S. PUBLIC HEALTH SERVICE IN REPLYING, ADDRESS THE Toc. Research Laboratory, 411 EB. 69th St., New York 21, N. Yo November 16, 1948. Dr. Joshua Lederberg, Department of Genetics, The University of Wisconsin, College of Agriculture, Madison 6, Wisconsin. Dear Josh: Dr. DuVigneaud felt that since the biochemical aspects of my note, and hence presumably of yours, were in the implication rather than in the content of the work, he did not wish to intervene in this case, IT have sent the original of the enclosed letter to the Journal of Biological Chemistry and hope we hear frem them within a few days. I will let you know imme- diately of any further developments. Sincerely yours, GF arecte Bernard D. Davis, Surgeon. BDD/h1 eng.