J.L. Memo 1/22/74 Memo of conversation with Dobzhansky 1/21/74 at Pittendrigh dinner. Mirsky introduced him to Avery in 1940-41, soon after Dob'y arrived in NY from Padadena. (D' knew Mirsky at Pasadena circa '36, when the latter took a fellowship ? with Pauling). Avery would not admit bacteria had "genes" - these were peculiar to garden peas. Later Mirsky became very critical of Avery. In D's mind Harriet settled the genetics of DNA purity with proteinase expts. (secondary attribution?) D: Did not remember White reference in 2' edition. I did not ask him about M. Heidelberger. D: Did not know how Harriet became interested. She was officially LC Dunn's student. [JL - Mirsky visited Columbia often - seminars, etc., collaborated with Pollister. Perhaps ask Hans Rio if he has any recollections.]. Suggested that Am Ph Soc may have De[ . . . ] papers - e.g. C&H files. [JL: ask Phil Hartman0. D did not really answer my question about his own papers D poked fun at Caslan's attribution to HJ Muller of having discovered everything [JL and D: like HJM did himself.]. He will send me D. Willistoni paper verifying coadapted gene c[ . . . ] (re RKM questions) * RKM= RK Merton