Contents. List of Contributors. Preface (J.S. Willis). Adaptations for Freezing Survival in Ectothermic Vertebrates (K.B. Storey and J.M. Storey). Responses of Marine Fishes to Freezing Temperatures: a New Look at Colligative Mechanisms (J.A. Raymond). Thermal Adaptation in Biological Membranes: Beyond Homeoviscous Adaptation (H.W. Detrich,III). Survival of Mammalina Cells Exposed to Pure Hypothermia in Culture (J. Kruuv). On Thermal Stability of Cation Gradients in Mammalian Cells (J.S. Willis). Protein Denaturation During Heat Shock (J.R. Lepock). The Role of Heat Shock Proteins in Thermotolerance (A. Nussenzweig, P. Burgman, and G.C. Li). Index.