From the introduction ... 'In this paper a detailed, general review of the toxic species evolved over a wide range of conditions is given, along with an outline of the physiological responses to the common fire gases and liquids. Published reviews appear to be few1-3; for the most part their objectives were very specific. We first consider the development of a real fire in an enclosure, outlining the steps leading to a toxic atmosphere. The degradation products of a number of important plastics are then examined. An attempt has been made to draw attention to the need for further study of the nature of polymeric additives and a class of high-temperature plastics. Finally a number of conclusions and recommendations for future study are outlined.'