Studies on the measurement of the evaporation coefficient of m-cresol were carried out using a technique evolved for the accurate measurement of the surface temperature of the liquid in terms of its bulk temperature. The technique gave excellent results within the limitations of the experimental procedure. It has been found that the evaporation flux does not vary with the pressure driving force linearly and hence at a given surface temperature, the evaporation coeffi-cient decreases with decreasing under saturation. This decrease was found to be linear and accordingly a set of straight line equations have been developed taking the surface temperature as parameter.