2596.     PAVLYUCHENKO, M. M.  [Fundamental Equation of Topochemical Reactions That Are Not Catalyzed by the Solid Reaction Product.]  Jour. Phys. Chem. (U.S.S.R.), vol. 23, 1949, pp. 809-812; Chem. Abs., vol. 43, 1949, p. 8820.

        If a reaction that has started on a crystal face is propagated at equal rates along the surface and normal to it, the rate of v of reaction is proportional to t².  If the reaction spreads over the surface more rapidly than it penetrates into the crystal, v is maximum at t=O; t is time.