Suggests that the Insular Celtic tradition of a mysterious bull living in the sea may be related to an ancient Near Eastern god of the deep whose cult, connected to fertility, spread to Northern Europe via the Mediterranean.

Discusses the etymology of OIr. Beltaine, bill, bille etc. and belletus.

Investigates the narrative role and function of birds in early Irish literature.

Offers a discussion in the light of the philosophical discourse of R. Barthes.

Considers the legal material attested in early Irish glossaries, and studies in particular the citations from Sechas Már and Bretha Nemed extant in Cormac’s Glossary, arguing that groups of glossae collectae extracted from the manuscripts containing these texts intervened in its compilation.

Discusses in particular the term andee, arguing that it denotes not humans but supernatural beings.

Challenges the view that the Táin was written as a complete text in the 6th or 7th c. and advances the thesis that recension I represents the first attempt at producing a written text of the epic, which was subsequently reworked and literarised in recensions II and III.

Refutes the points raised by C. Breatnach in Éigse 30 (1997), pp. 109-132 against the identity of Lebar Glinne Dá Locha and Rawlinson B 502.

List of corrections to G. Broderick, Manx stories and reminiscences of Ned Beg Hom Ruy, in ZCP 38 (1981), pp. 113-194, and in ZCP 39 (1982), pp. 117-194.