Cover; Half Title; Title Page; Copyright Page; Table of Contents; PREFACE; ACKNOWLEDGMENTS; INTRODUCTION; The Notion of Sense-Data; Professor Moore's Position; Professor Broad and Ordinary Language; Procedure and Synopsis; I. THE 'FACTS' OF PERCEPTION; II. 'PHYSICAL OBJECT' AND 'OBJECTIVE CONSTITUENT'; III. THE 'EXTERNAL REFERENCE' OF PERCEPTION; I. The 'External Reference'; II. The Relevance of Delusive Perception; IV. THE 'LOGICAL QUESTION' AND THE ALTERNATIVE THEORIES; V. THE 'CAUSAL QUESTION'; VI. THE SENSUM THEORY; BIBLIOGRAPHY; INDEX