AN I N F O R M A L discussion of hyaline membrane disease or the respiratory distress syndrome was held on July 2I, I959, at the IX International Congress of Pediatrics in Montreal. The following were the participants: Dr. E. K. Ahvenainen, Jyvaskyla, Finland Dr . Dr. Dr. Dr. Dr. Dr Dr Dr. Dr. Dr Dr. Dr Dr Virginia Apgar, New York Peter Auld, Boston and Montreal Mary Ellen Avery, Baltimore Heinrich Baar, Pownal, Maine Kurt Benirschke, Boston Eric Burnard, New York Albert Claireaux, London Stewart Clifford, Boston Myron Cohen, Baltimore Charles Cook, Boston Beryl Corner, Bristol John Craig, Pittsburgh V. Mary Crosse, Birmingham