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Prefatory note 2. Table of contents 3. Charts, figures and tables 4. Abbreviations 5. 1. Introduction: diachronic linguistics (by Lehmann, Winfred P.) 6. 2. Building on empirical foundations (by Labov, William) 7. 3. A semiotic model of diachronic process phonology (by Dressler, Wolfgang U.) 8. 4. Semantically-marked root morphemes in diachronic morphology (by Malkiel, Yakov) 9. 5. From propositional to textual and expressive meanings some semantic-pragmatic aspects of grammaticalization (by Traugott, Elizabeth Closs) 10. 6. Romance Etymology (by Dworkin, Steven N.) 11. 7. Indo-european etymology with special reference to grammatical category (by Justus, Carol F.) 12. Bibliography 13. Subject index 14. Author index
Hock et al. (Fri,) studied this question.