CHEMICAL CORPS BIOLOGICAL LABORATORIES MM DIVISION Comp Detrick, Frederick, Moryland 30 July 1952 Dr. Joshua Lederberg ~—-——_-_.__Mept, of Genetiés University of Wisconsin Madison, Wisconsin Dear Joshs Thank you very much for your sugcestions resarding Chapter XI. I certainly appreciate your comments and I shall make appropriate changes. No break in the hot weather and attendant lethargy as yet. ‘Sincerely, WB /bls