2246.     ---------------.  [MEYER, G., AND SCHEFFER, F. E. C.]  [Formation of Carbides in the System Metal-Carbon-Oxygen.]  Rec. trav. chim., vol. 47, 1928, pp. 401-405 (in French); Chem. Abs., vol. 22, 1928, p. 1919.

        Theoretical considerations are augmented.  The knowledge of the values of the heats of formation of the different equilibria helps to determine to which one of the 4 types of P-T diagrams a certain system belongs.  The system Ni-C-O is taken as an example to prove the conclusions.