Please submit your announcement to this Bulletin as early as possible! Several were received too late for interested readers to make use of. After the event please send a summary of the doings, and/or the Proceedings, if any. International Symposium on Resource availability and the structure and functioning of tropical ecosystems: 5—12 June 1988. Universities of Miami, Florida, and San Jose, Costa Rica. Contact: Dr. J.M, Savage, Silver Anniversary Symposium, Dept. of Biology, University of Miami, POB 249118, Coral Gables F1 33124, U.S.A.