In order to diminish the errors in the identification of species the light-keepers have been instructed to forward, when possible, a leg and wing of every bird about which they are doubtful, and we trust they will do so. Some entries seem very improbable, and others are isolated and apparently valueless. When records accumulate, both may prove useful. In addition to the little Skellig Rock--off the coast of Kerry--the Gannet also breeds on the Bull Rock fifteen miles further south, and a few are also reported as breeding in the Cow Rock quite close to it. No matter what results are arrived at from this enquiry, it is satisfactory to be in correspondence with a number of observers on isolated points all around the coast. The information supplied, if corroborated during several years by different light-keepers, cannot but be valuable, and we wish to impress on them the necessity of continuing to assist in this investigation. To all the light-keepers who have given their time and attention to the subject we return our sincere thanks, especially as their assistance is voluntary and given solely for the advancement of knowledge. Mr. Armstrong, Secretary to the Irish Lights Board, and Captain Boxer, R.N., Inspector of Irish Lights, have helped us in many ways by their advice and co-operation. The Commissioners of Irish Lights have given us every facility, and also material support by subscribing for forty copies of the report and distributing them among the light-keepers. Alexander G. More. Richard M. Barrington. List of Light-stations.