So much has been written on the nervous and mental troubles induced by the conditionsof servicein the Great War that the subject seems almost threadbare at this time of day. But as no special account has appeared, so far as I am aware, of the measures taken in Ireland for the treatment of those whose reason had become impaired in the course of war service, I venture to think that a short contribution to the subject, dealing more particularly with what was done locally, will not be inappropriate either to the place or the occasion.