AN OVERVIEW OF THE SUBJECT, REPRODUCED FROM THE 11TH AND 14TH EDITIONS OF THE ENCYCLOPAEDIA BRITANNICA, SERVES AS THE INTRODUCTION TO THE VOLUME. ARTICLES ON DEMOGRAPHY COVER TRENDS IN SUICIDE RATES IN THE UNITED STATES FROM 1933 TO 1968. THE DEMOGRAPHIC EPIDEMIOLOGY OF SUICIDE, AND SUICIDE AMONG BLACKS IN NEW ORLEANS, LA. ARTICLES ON METHODOLOGICAL DEVELOPMENTS IN THE STUDY OF SUICIDE DISCUSS LETHALITY FACTORS AND THE SUICIDE ATTEMPT, AND DEVELOPMENT AND VALIDATION OF SCALES FOR ESTIMATING SUICIDE RISK. PAPERS ON THE LOGICAL AND COGNITIVE ASPECTS OF SUICIDE CONCERN REASONING PATTERNS IN SUICIDE NOTES, DEVELOPMENTS IN THE STUDY OF SUICIDAL THINKING AND THE UTILITY OF SUICIDE NOTES IN EXPLORING SUCIDICAL BEHAVIOR. OTHERS ARTICLES EXAMINE CLINICAL CORRELATES OF SUICIDE -- SELF-MUTILATION AND SUICIDE, SUICIDE AMONG STUDENTS, SUICIDE AMONG THE GIFTED -- AND PHILOSOPHICAL AND LEGAL ASPECTS OF THE SUBJECT. THE CLOSING ARTICLES CONCERN SUICIDE PREVENTION AND CRISIS INTERVENTION AND INCLUDE DISCUSSIONS OF THE USE OF VOLUNTEERS IN PREVENTION AND INTERVENTION PROGRAMS, THE EFFECT OF SUICIDE PREVENTION CENTERS ON SUICIDE RATES IN BRITAIN, AND A LOS ANGELES PROGRAM'S EXPANSION OF ITS ANTISUICIDE EFFORTS BEYOND CRISIS INTERVENTION. AUTHOR AND SUBJECT INDEXES ARE PROVIDED. (LKM)