Preface -- Acknowledgements -- 1. Sound Change (1965) -- 2. Linguistic Universals and Linguistic Change (1968) -- 3. Historical Linguistics (1970) -- 4. Historical Linguistics (1971) -- 5. Explanation in Phonology (1972) -- 6. How Abstract is Phonology? (1973) -- 7. Productivity in Phonology (1973) -- 8. From Paleogrammarians to Neogrammarians (1974) -- 9. On the Evaluation Measure (1974) -- 10. Remarks on Analogical Change (1974) -- 11. Analogical Change as a Problem for Linguistic Theory (1978) -- Bibliography -- Index.