HANDBOOK OF GENETICS EDITORIAL COMMITTEE c/o GIHODO CO. LTD. 5, AKASAKA-TAMEIKE, MINATOKU, TOKYO, JAPAN Yosito SrnoTé, Editor in chief April 5, 1955 International Christian University, Tokyo Sajiro MAKINO Hokkaidé University, Sapporo Seiji MATSUMURA National Institute of Genetics, Misima Heihachiro MiyayAMA Ministry of Education, Tokyo Daigoro MORIWAKI Tokyo Metropolitan University, Tokyo Yatar6é6 TAZIMA Silk Science Research Institute, Tokyo Kosuke YAMASHITA Kyoto University, Kyoto Akira YUASA University of Tokyo, Tokyo Dr. J. Lederberg Dept. of Genetics Univ. of Wisconsin Madison 6, Wis. Dear Dr. Lederberg: We are planning to publish, early in 1956, a “Handbook of Genetics” (ca. pp. 850). The main portion of the handbook will be published in Japanese, but a directory of geneticists and institutes will be included in English. Important among the contents will be descriptions of the present status of genetical research institutes and agencies and introduction of eminent geneticists and their major works. In order to assure accuracy of description, we are sending questionnaire blanks to the pertinent individuals. May we request your cooperation in filling and returning the blanks to us at your earliest convenience? In order to complete our edition in time, it would be greatly appreciated if your answer could reach us by the end of August, 1955. Please mail your answers addressed to: Dr. S. Matsumura National Institute of Genetics Misima, Sizuoka-ken, Japan We shall appreciate it very much if you could enclose a copy of your recent photograph. Sincerely yours, Sraike SIRE Yosito SrnoTd, Editor in Chief