MikRwuse . Today, I would like to #sk to irofessor J. Lederberg about his possible and maximum period of stay in Japan 2t the time of his vieit, in fall of next year, Le61l,through you: provably you can talk the other related things to him when it is necessary, as in the case we have rad before. The reason is as follows. I discuseed with Frofessor S. chabori (Head of School of Science of Csaka Uriversity; Frofessor of Toky vd v Cb a. + 4 oO Wniversity) an fessor EK. Sakaguchi( Head of Inst. of Appl. Micro. Fiol. of Tokyo Univ.) on the schedule to invite hir to CAPE! . They desired his visitting end promissed to support to get his appointment from Japan Academy of Gcierce. To push this program, it is essential to know about his possibile a period of stey in Japan. They suggested that the Society desires the guest's stay frou 6--12 monthes, as a rule, long. Nie like to keep tim in Japan as long as possible, but also know he has very limitted time because the other ponple also like to keep him. s our corclusicn, if he can-spend about © monthes in Jepsen (at least), at Inet.Appl.:icrobiol. in Tokyo “niv., Nat. Inct. t. in Mishima, and Cseka Univ, or ete., it sakes us much easier to get appointment fro U.a.c.. The Society invite only sne or two ¢ over the world ‘Lich cevers whole field of Science, because of the liritted tudget, as you know. I am quite sure, 'e is ore of the best guest for Sctence in Japan, therefore the point wilt be concentrated for period of his stoy. This is why, I line to know that point. I am also studing another possibility te get pppointment frez Rochfeller Foundation (through Dr 2.E.Anderson, for him, for safty. In both cases, however, ,eriod of his stay seers serious factor. Please tell tim about this cituation and save sure on this point. Alse Give him wy best regards.