INDIANA UNIVERSITY BLOOMINGTON, INDIANA Sept. 20, 1919 Department of Bacteriology Dr. Joshua Lederberg Dept. of Genetics University of Wisconsin Madison 6, Wisconsin Dear Joshua: I received Davis' comments on your manuscript, and I enclose a copy of tnem for yous also a manuscript of his that is still in press. As you expected, Berny has written practically as much in comments as you had in the original papere I have not yet read his comments, but I will do so tonight. Plesse let me have your reactions as to what can and what cannot be included or appended, and then I will do the fitting ine Please return his manu- script and the comments, which I shall then return to you if you wish to have them. With best regards, vb S+ Be Luria ence