TWENTY ARTICLES ARE INCLUDED IN THIS VOLUME, THE 22ND IN THE PSYCHOLOGICAL STUDY OF THE CHILD SERIES. PAPERS ON PSYCHOPATHOLOGY AND THERAPY INTERPRET LOSING AND BEING LOST, OBSTACLES TO PSYCHOANALYTIC CURE, AND AFFECT CONTROL. ASPECTS OF PSYCHOANALYTIC THEORY CONSIDERED ARE FREUD'S CONCEPT OF PRIMAL REPRESSION, CONCEPTS OF STRUCTURE AND STRUCTURALIZATION IN LEARNING AND CREATIVITY AND THE METAPSYCHOLOGY OF THE PREANALYTIC PATIENT. PAPERS ON NORMAL AND PATHOLOGICAL DEVELOPMENT DISCUSS THERAPEUTIC INTERVENTION IN THE PRENURSERY, THE RECOVERY OF A MEMORY FROM INFANCY, CONSIDERATIONS IN THE OCCUPATIONS OF THE BLIND, INDIVIDUATION IN ADOLESCENCE, AND LIBIDINAL PHASES IN TREATMENT OF A PRESCHOOL CHILD. ALSO CONCERNING DEVELOPMENT (NORMAL AND PATHOLOGICAL) ARE PAPERS ON EARLY INFANCY, THE PEEK-A-BOO GAME, ENCOPRESIS IN A LATENCY BOY, AND MASTURBATION FANTASIES. CLINICAL CONTRIBUTIONS CONCERN VISUAL HALLUCINOSIS, OBJECT CONSTANCY AND PSYCHOTIC RECONSTRUCTION, SCHOOL PHOBIAS, AND THE PERSISTENCE OF AN INFANTILE FETISH. A LIST OF THE CONTENTS OF THE FIRST 21 VOLUMES IN THE SERIES IS ALSO PROVIDED. THIS DOCUMENT WAS PUBLISHED BY THE INTERNATIONAL UNIVERSITIES PRESS, INC., 239 PARK AVENUE SOUTH, NEW YORK, NEW YORK 10003, AND IS AVAILABLE FOR $12.00. (JD)