PATENTS

      5.  ------.  [AHRENS, A.]  Synthesis Gas From Brown Coal.  Australian Patent 105,659. Nov. 24, 1938: appl. Filed June 7, 1938, in Germany June 7, 1937.  Chem. Zentralb., 1939, I, p. 3997.

            In a continuous retort for the production of water gas, between the water gas outlet and that for the synthesis gas (CO:H₂=1:2) an intermediate zone is provided through which a part of the water gas is passed to regulate the CO content.