Cover -- Title -- Copyright -- Original Title -- Original Copyright -- REVISER'S NOTE TO FIFTH EDITION -- PUBLISHER'S NOTE -- PREFACE -- Contents -- I THE STUDY OF LOGIC -- 1. Reflective Thinking -- 2. Argument -- 3. Validity and Truth -- 4. Form and Logical Forms -- 5. Logical Symbolism and Form -- II PROPOSITIONS AND THEIR RELATIONS -- 1. Propositions and Sentences -- 2. Propositions, Mental Attitudes, and Facts -- 3. Assertion, Inference, and Implication -- 4. The Traditional Analysis of Propositions -- 5. Simple, Compound, and General Propositions -- 6. The Seven Relations between Propositions and the Figure of Opposition -- 7. Immediate Inferences -- III COMPOUND PROPOSITIONS AND ARGUMENTS -- 1. Equivalents and Contradictories -- 2. Compound Arguments with One or More Composite Premisses -- IV THE TRADITIONAL SYLLOGISM -- 1. Defining Characteristics of a Syllogism -- 2. Figures and Moods of the Syllogism -- 3. Reduction and the Antilogism -- 4. Polysyllogisms -- 5. Abbreviated Arguments and Epicheirema -- V INDIVIDUALS, CLASSES, AND RELATIONS -- 1. Individuals and Characteristics -- 2. Classes -- 3. Relations -- 4. Class-inclusion and Class-membership -- Single-membered Classes -- 5. Subclasses and Empty Classes -- 6. The Universe of Discourse and the Universal Class -- 7. Reconsideration of the Traditional Treatment of Opposition and Immediate Inferences -- 8. The Logical Properties of Relations and the Validity of Inferences -- VI CLASSIFICATION AND DESCRIPTION -- 1. Terminological Confusions -- 2. Connotation, Denotation, and Intension -- 3. Extension and Connotation -- 4. Classification and Division -- 5. The Predicables -- 6. Definition -- 7. Descriptions -- VII VARIABLES, PROPOSITIONAL FORMS, AND MATERIAL IMPLICATION -- 1. Variable Symbols