Catalysis remains a fascinating meeting ground of knowledge and experience, of theories and of experimentation belonging to various disciplines of science. Catalysis is not a science, it is a phenomenon. It may arise in connection with a vital biochemical process, an industrially important chemical reaction, an interesting intramolecular rearrangement, a meson-influenced nuclear change, a combustion process, an atomic spin transmutation, or innumerable other rale processes. The phenomenon of catalysis arises in connection with many scientific endeavors, and it involves many and diverse scientific principles. In this volume of the Advances in Catalysis and Related Subjects, we have continued our attempt to collect progress and integrated knowledge toward a better scientific understanding of catalyzed rate processes.