he ' les PROGREJS REPORT = DIVISICH OF BICLOGY AND MEDICINE — MONTH OF JUNE, 1950 RESEARCH PROJECTS APPROVED UR RENEWED DURING JUNE 1950: The following numbers of research projects were approved for negotiation or renewal during June for direct akC administration: Wo. of Projects Biology Medicine Biopnysics 3 6 3 “R Amount $ 63 3 780 138 436 158,700 “$360,916 In addition, five proposals were declined. A list of the projects covered in the above summation is available in the Division of Biology and Medicins. PIPTH INTARNATI aL CAICEA CONGRESS “© SIXTH INTERNATIONAL COLGRESS OF RADICLOGY. Thorough the Technical Cooperation Program, arrangements have been made for the following persons to visit the Atomic Energy astablishment at Harwell, england wolle they are attending the above wzeetings in Paris and London as accredited visitors of the AnC: Or. shields warren, Dr. Roebley Svans, Dr. G. Farila, ur. J. G. Hamilton, Dr. Alexander Hollaender, Mr. L. D, Harineliil, ur. Lesiie F. Nims, Ur, d. %. Parker, Dr. Hebert 3, Jtone and Mr, Lauriston 5, Taylor. Tne discussions held at Harwell will be unclasgifisd. Arrangements are also being made for the group to be conducted on a classified suided tour of the restricted areas to the extent that the United Lingdom authorities deter-~ taizie is appronriate. A further session of the "Permissible Dose Conference" which was held at Chalk River, Cntario, on September 29-30, 1947, will be held while the group ia in Sngland, itost of the original personnel will be present for these discussions. BICLOSY BRANCH Experimental Pornulation Genetics In an effort to determine the scenetic change oecurring following irradiation, experimental populations of drosophila are being studied at the Long Island Siolegical Laboratories, . Analyses over a period of sixteen generations show that lethal chromoagmes have accumulated in the untreated GPO OFFICE > DO ARCHIVES 16+-55741-1