This paper deals with a study and discussion of the distribution of dissolved nitrogen in sea water and its relation to the dissolved oxygen and the total carbon dioxide. Previous studies have been made by Buch (1), Knudsen (8, 9), Petterson (11), Jacobsen (7), Hamburg (6), Dittmar (3) and recently by Rakestraw and Emmel (13., 14). Fox (4) published data showing the variation in the concentration of dissolved nitrogen in equilibrium with the nitrogen of the atmosphere at standard pressure for different temperatures and for different concentrations of sea water. Using these data it is possible to calculate the percent of saturation of the dissolved nitrogen in sea water at a given temperature and chlorinity, the pressure of the gaseous nitrogen being equivalent to that of the gas in air at standard pressure