2245.     ---------------.  [MEYER, G., AND SCHEFFER, F. E. C.]  [Formation of Carbides in the Systems Metal-Carbon-Hydrogen and Metal-Carbon-Oxygen.]  Rec. trav. chim., vol. 46, 1927, pp. 359-368; Chem. Abs., vol. 21, 1927, p. 3011.

        Conditions for the existence of carbides in the systems M-C-O and M-C-H, in the presence of CO and CO₂, are discussed from the standpoint of the phase rule.  Diagrams are given.  Carbides rich in C and stable at low temperatures are probably formed during the reactions of water gas with metallic catalysts.  A Ni carbide of the above type has been isolated.