The results of ongoing research on the acquisition of Irish as a first language are presented in this collection of four papers from a 1991 seminar and a fifth paper specially commissioned for this volume. The study of Irish syntax is of particular interest because of its contribution to the ongoing search for a Universal Grammar. The papers and authors are as follows: "The Acquisition of Irish as a First Language: What Do We Know?" (Tina Hickey); "Irish Language Acquisition and Speech/Language Therapy: Principles and Needs" (J. L. Kallen and Martine Smith); "Resilience and Versatility in an Urban Gaeltacht" (Gabrielle Maguire); "Developmental Stages in the Acquisition of Irish Phonology and Initial Mutations" (Donall P. O Baoill); and "Lan Beil" (Diarmuid O Donnchadha), which is in Irish. (Contains 110 references.) (LB)