FIRST ANNUAL MEETING OF THE ENVIRONMENTAL MUTAGEN SOCIETY Tm3 Environmental Mutagen Society, which is concerned with the mutagenic and chromosome breaking effect of environmental agents, will hold its first annual meeting in Washington, D.C., from March 22 to 25, 1970. Keynote speaker on Sunday evening, March 22, is H. BEivlz .mr Gr oss . Symposia : Selected Methods of Mutagen Testing (Chairman: A. Hollaender ; Speakers : F. de Serres, H. Malling, M. Legator, S. Epstein, and P. Neurath) ; Basic Aspects of Mutagenesis (Chairman : E. Freese ; Speakers : J. Drake, R. F. Kimball, M. Meselson, and W. Nichols) ; Correlations and Population Monitoring (Chairman: H. Falk; Speakers : J. A. Miller, H. Kalter, J. Cleaver, and J. Crow); Cyclamates (Chairman: C. J. Kensler; Speakers : L. Golberg, S. Green, C. Biava, J. Verrett, and P. Nees). Contributed papers (15 min) are invited. Deadline January 15. Location : Sheraton Park Hotel, 2660 Connecticut Avenue, Washington, D.C. Registration Fees : $10.00 for members of the EMS and $15.00 for non-members. Further information can be obtained from Dr. FxEnmicx J. DE SERRFS, Editor, EMS Newsletter, Biology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830.