1750. ------. [JAEGAR, A. O.] (Selden Co.). Cooling Apparatus Used for Exothermic Catalytic Reactions. British Patent 310,956, May 4, 1928. Chem. Abs., vol. 24, 1930, p. 532.

Catalyst tubes are cooled by a surrounding liquid bath, Hg or an Hg alloy. The liquid is allowed to boil only after it is withdrawn from the bath itself to a region of lower pressure.