results of measurements of the electromotix e force of concentration cell5 -kt still higher concentrations, the conductance approaches that of metallic conductors. At approximately 2 11-a solution of sodium in liquid am-* 31. Busch, Ber., 38, 861 (1905). 2 Richards and Rowe, Proc. Am. Acad., 49, 183 (1913). Sodium nitrate (1360 g.) was dissolved in 7.2 liters of water.