Alkaloids from amphibian skins (J.W. Daly et al.). Naturally occurring cyclotryptophans and cyclotryptamines (U. Anthoni et al.). Recent research on pyrrole alkaloids (P.W. LeQuesne et al.). Recent developments in the chemistry of norditerpenoid and diterpenoid alkaloids (B.S. Joshi, S.W. Pelletier). New approaches to the syntheses of piperidine, izidine, and quinazoline alkaloids by means of transition metal catalyzed carbonylations (I. Ojima, D.M. Iula). Subject index. Organism index.