PERIPATETIC SEMINAR ON SHEAVES AND LOGIC 71st meeting -- First Announcement As announced in Coimbra, the 71st meeting of the PSSL will be held in Louvain-la-Neuve on the weekend of 16-17 October 1999. We welcome contributed talks on category theory and related areas. Further details of the arrangements for the meeting, and a registration form, will be sent out in August. Francis Borceux Marino Gran Mamuka Jibladze Enrico Vitale