1. Contributors; 2. Preface; 3. Introduction (by Fischer, Olga); 4. A lovely little example: Word order options and category shift in the premodifying string (by Adamson, Sylvia M.); 5. The grammaticalization of the verb 'pray' (by Akimoto, Minoji); 6. The grammaticalization of concessive markers in Early Modern English (by Chen, Guohua); 7. Combining English auxiliaries (by Denison, David); 8. Grammaticalisation: Unidirectional, non-reversable?: The case of to before the infinitive in English (by Fischer, Olga); 9. Remarks on the de-grammaticalisation of infinitival to in present-day American English (by Fitzmaurice, Susan); 10. The role of person and position in Old English (by Gelderen, Elly van); 11. Remarks on (uni)directionality (by Lass, Roger); 12. Soplice and witodlice: Discourse markers in Old English (by Lenker, Ursula); 13. Onginnan/beginnan with bare and to-infinitive in Aelfric (by Los, Bettelou); 14. Some suggestions for explaining the origin and development of the definite article in English (by McColl Millar, Robert); 15. Parallelism vs. asymmetry: The case of English counterfactual conditionals (by Molencki, Rafal); 16. The grammaticalization of the present perfect in English: Tracks of change and continuity in a linguistic enclave (by Tagliamonte, Sali A.); 17. Grammaticalization versus lexicalization: 'Methinks' there is some confusion (by Wischer, Ilse); 18. Name index; 19. Subject index

Nearly all the paper published in this volume have in one way or another provided grounds for reevaluating the principle of unidirectionality of change which is often considered a basic feature of grammaticalizaiton.