Correspondents:
Dr O Maaløe, Dr Jorge Macedo, Dr A G Mackinlay, John Maddox, Monsieur le Maire (Nice), Dr Gerardo Mancillas, Dr Marc Mangel, Professor Roy Markham, Kevin Martin, Dr Ann Massar, Jacques Masui, Professor J Mathieu, Dr Gastone Matioli, Professor Stephen C Maxon, Barbara Mayer, Dr George Mayeske, Professor John Maynard Smith, Dr Giampiero di Mayorca, Dr Ernst Mayr, Joseph L McCarthy (John Danz Lectureship), Dr William H McClain, Dr John McInnes (Crick talk: "Why I study biology"), Dr Victor A McKusick, Daniel McMahon, Dr Kenneth McQuillen (J B Gurdon), Sir Peter Medawar, Dr Frederick Meins Jr, Dr J Miklos (Hugh Montefiore), Albert S Mildvan, Dr P H Millar, Dr J H Miller, Professor Marvin Minsky, Graeme Mitchison, Dr Sohan P Modak (includes two photographs of cell sections), M[illegible], Jacques Monod, Dr Peter T Mora, Dr Robin Monro, Professor Rita Levi-Montalcini, Professor Sir Nevill Mott, Dr L M Mukhin (includes b/w photograph of Crick), Dr B Müller-Hill, Mary Munro, and Dr D M G Murphy.