IN a previous article (NATURE, 133, 673, May 5), reference was made to the suitability of Aberdeen as a centre for excursions, and advantage has been taken of the city's position in this respect by the local committee for the Aberdeen meeting of the British Association to be held on September 5-12. Arrangements for excursions to places of historical interest through some of the most striking natural scenery in Scotland have now been completed. The Committee did not dare to hope that it could call upon the members of the Association to repeat the experience of its predecessors of nearly eighty years ago, where some of the excursions occupied the better part of two days. It has therefore arranged that the excursions taking place on the Saturday of the meeting will start at a comfortable time after breakfast and arrive back before dinner. The Committee has been fortunate in securing the services of authorities on the different areas and places of interest to be visited to write descriptive articles on the general excursions, and these articles will add to the enjoyment of these excursions. Arrangements have also been made for guides where necessary to accompany the members and to give information concerning the different places visited.