The earliest writing in Ireland is in the form of ogham inscriptions, carved along the edges of numerous stones found throughout the country, with a strong concentration in the south-west. This Corpus contains the texts of all the ogham inscriptions then known in Ireland and Britain (with the exception of the Scottish Pictish material). Professor Macalister's compendium of Celtic ogham script represents one of the most valuable works of Celtic scholarship this century, and it remains as important and useful today as on its original publication. Corpus Inscriptionum Insularum Celticarum has remained in constant demand for the last fifty years, and it is here re-published in the Four Courts Press Celtic Studies series with a new introduction by Dr D. McManus.