Human immersion and survival in cold water

IN examining the problem of survival of men immersed in cold Arctic waters, it is clear that the rate of cooling of the body will be of signal importance, and Glaser1 has recently directed attention to the fact that heat losses from the human body immersed in cold water can be balanced, and the temperature of the deep tissues maintained, by exercise. In addition, however, survival may well depend very significantly on the maintenance of some degree of manual dexterity for clambering on to rafts, wreckage, etc.