1. Foreword & acknowledgements; 2. Abbreviations; 3. List of plates; 4. Notes on contributors; 5. Editors' introduction; 6. Allegory, the aes dana and the liberal arts in Medieval Irish literature (by Boyle, Elizabeth); 7. Cryptography and the alphabet in the "Book of Adhamh O Cianain" (by Hayden, Deborah); 8. Caide Mathair Breithre "What is the Mother of a Word": Thinking about words in Medieval Ireland (by Poppe, Erich); 9. The expression of "sense, meaning, signification" in the Old Irish glosses, and particularly in the Milan and Saint Gall glosses (by Lambert, Pierre-Yves); 10. The verbal paradigms in Auraicept na nEces (by Ahlqvist, Anders); 11. The glossing of the Early Irish law tracts (by Breatnach, Liam); 12. Teaching between the lines: Grammar and Grammatica in the classroom in Early Medieval Wales (by Russell, Paul); 13. The Welsh bardic grammars on Litterae (by Charles-Edwards, T.M.); 14. Poetry by numbers: the poetic triads in Gramadegau Penceirddiaid (by Russell, Paul); 15. Gramadeg Gwysanau: A fragment of 14th-Century Welsh bardic grammar (by Parry Owen, Ann); 16. Master list of references; 17. Index of manuscripts; 18. Index of subjects; 19. Index of terms by language