2752.     PRING, J. N., AND HUTTON, R. S.  Direct Union of Carbon and Hydrogen at High Temperatures.  Jour. Chem. Soc., vol. 89, 1906, pp. 1591-1601; Proc. Chem. Soc., vol. 22, 1906, p. 260; Chem. Abs., vol. 1, 1907, pp. 178, 550.

        Purest C rods on being heated in H2 gave about 0.25% CH4 at 1,200-1,350, 0.4% at 1,700, and about 1% at 2,700.  (See Bone and Jerdan, Jour. Chem. Soc., vol. 71, 1897, p. 41; vol. 79, 1901, p. 1042.)  Traces of C2H2 were formed at 1,700, measurable quantities at 1,800, 0.88% at 2,000, 3.35-4.2% at 2,500, and 2.75-3.03% at 2,700.