The series entitled Twentieth Century Catholicism, of which this is the second volume, is intended to complement and supplement Hawthorn's previously published Twentieth Century Encyclopedia of Catholicism by commenting upon later developments in areas created in the latter work. Within that context, this volume covers a diversity of subjects, from psychical phenomena to biblical criticism, although many -- indeed, -- of the articles understandably are devoted to commentary on matters liturgical. essays individually are well conceived and intelligently presented, and there is consistency of treatment as welcome as it is unexpected in a work such as this which of being a unified ""collection."" This volume will be indispensable users of the Encyclopedia; it will also prove valuable as an independent cross-sampling, for the general reader, of recent developments in Catholic thinking. Volume III this series will also appear this season.