The intercorrelation of data obtained from the measurement of quantities connected with the solution of gases in liquids has led to a number of empirical laws (e.g. Henry’s Law, Just’s Law) which in turn have led to attempts at theoretical justification. Attention has of course been devoted to the theoretical justification for deviation from these laws. The measurable quantities have been: (a) Solubility under various conditions (b) Molal volumes of gases in liquids These appear to have been the only quantities used. The limited scope of the data has the effect of placing great strain on the accuracy. Much of the data is discordant. Reviews of interrelationships of these quantities and the relation of the quantities to the properties of the pure components of the mixture have been published.