Preface -- 1. Linguistics: Theory and Interpretation -- 1.1. The Empirical Domain of a Linguistic Theory -- 1.2. The Interpretation Problem -- 1.3. A Few Descriptive Definitions -- 2. Pure Models: Phrase-Structure Grammars -- 2.1. Generative Power and Structural Description -- 2.2. Regular Grammars for Natural Languages -- 2.3. Context-Free Grammars for Natural Languages -- 2.4. Context-Sensitive Grammars for Natural Languages -- 2.5. Recursive Enumerability and Decidability of Natural Languages -- 3. Mixed Models I: The Transformational Grammar in Aspects -- 3.1. The Aspects Model, an Informal Discussion -- 3.2. Transformations, Formal Treatment -- 3.3. Later Developments -- 4. Mixed Models II: Other Transformational Grammars -- 4.1. Reasons for Finding Alternative Models -- 4.2. Categorial Grammars -- 4.3. Operator Grammars -- 4.4. Adjunction Grammars -- 4.5. Dependency Grammars -- 4.6. Final Remarks -- 5. The Generative Power of Transformational Grammars -- 5.1. The Generative Power of Transformational Grammars with a Context-sensitive Base -- 5.2. The Generative Power of Transformational Grammars with a Simpler Base -- 5.3. Linguistic Consequences -- 5.4. Solutions for the Problem of Transformational Overcapacity -- 6. Statistical Inference in Linguistics -- 6.1. Markov-Sources and Natural Language -- 6.2. A Probabilistic Grammar for a Child's Language -- Historical and Bibliographical Remarks -- Bibliography -- Author index -- Subject index.