2217.     MAYER, M., AND ALTMAYER, V.  [Equilibrium of Methane.]  Ber. deut. chem. Gesell., vol. 40, 1907, pp. 2134-2144; Jour. Chem. Soc., vol. 92, 1907, I, p. 457.

        From equilibrium data calculated on the basis of investigations of the reaction C+2 H₂=CH₄ in the presence of Ni or Co at temperature 470°-620°, doubts are expressed that Bone and Jerdan (abs. 296) could have effected the synthesis of CH₄ at 1,200°.  Probably the C employed contained impurities that yielded CH₄.