Mechanisms of Adhesion.- Physicochemical Interactions of the Substratum, Microorganisms, and the Fluid Phase.- Stereo-biochemistry and Function of Polymers.- Adhesion to Inanimate Surfaces.- Adhesion to Animal Surfaces.- Bacterial Adhesion to Plant Root Surfaces.- Genetic Control of Bacterial Adhesion.- Biofilm Development and Its Consequences.- Surface Colonization Parameters from Cell Density and Distribution.- Biofilm Development: A Process Analysis.- Chemical Characterization of Films.- Effects of Network Structure on the Phase Transition of Acrylamide-Sodium Acrylate Copolymer Gels.- Colonization by Higher Organisms.- Activity on Surfaces.- Comparative Physiology of Attached and Free-living Bacteria.- Activities of Microorganisms Attached to Living Surfaces.- Utilization of Substrates and Transformation of Solid Substrata.- Attachment of Bacteria: Advantage or Disadvantage for Survival in the Aquatic Environment.- Aggregation.- Physiology of Cell Aggregation: Flocculation by Saccharom yces cerevisiae As a Model System.- Aggregation, Cohesion, Adhesion, Phagocytosis, and Morphogenesis in Dictyostelium — Mechanisms and Implications.- Consequences of Aggregation.- Microcolony Formation and Consortia.- Epilogue.- List of Participants with Fields of Research.- Author Index.