3294.     STORCH, H. H., AND GOLDEN, P. L.  Preparation of Pure Methane From Natural Gas.  Jour. Am. Chem. Soc., vol. 54, 1932, p. 4662; Chem. Abs., vol. 27, 1933, p. 589.

        Higher hydrocarbons are removed from natural gas by passing it through a layer of active coconut charcoal.