Survivors of catastrophies at sea are faced with the problem of existence on restricted rations, particularly with respect to water. Dehydration from the lack of drinking water and exaggerated by the exposure to sun and wind is inevitable, for it is axiomatic that the free consumption of sea water is fatal. Water is the most pressing need under these circumstances, and the suggestion has been variously made that carbohydrate or fat added to the ration would exert a favorable action in relieving the demand for excretory water. A recent report 1 shows in detail the physiological adaptations whereby water is saved by giving carbohydrate to men on a limited water intake.
Six young adult males were kept in a room at constant temperature (23 C), humidity (55%) and air movement for three day periods, during which the following three rations were consumed daily: 350 ml. distilled water, 250 ml. distilled