Fig. 7. van't Hoff plots of (A) Symenchelis parasitica Hbs I and II and (B) Thermarces cerberus Hbs I and II and Z. viviparus hemolysate. The data points at the indicated pH values were interpolated from logP₅₀ vs pH curves at 5°C, 25°C and 35°C (Figs 3, 6) as described in Materials and methods. Numbers next to the lines are H (heat of oxygenation) values in kJ mol^-1. (7.50 Torr=1 kPa.)