General Introduction (R.S. Wotton). The Classification of Particulate and Dissolved Matter (R.S. Wotton). Sampling and Analysis of Particulate and Dissolved Matter (P.J. Wangersky). Origin and Formation of Organic and Inorganic Particles in Aquatic Systems (G.M. Ward, A.K. Ward, C.N. Dahm, and N.G. Aumen). Physico-Chemical Factors in Particle Aggregation (B.D. Johnson, K. Kranck, and D.K. Muschenheim). Seasonal and Diel Changes in Particulate and Dissolved Organic Matter (C.M. Burney). Dynamics of Particulate and Dissolved Organic Matter over the Substratum of Water Bodies (M.A. Lock). The Dynamics of Surface Microlayers in Aquatic Environments (J.S. Maki and M. Hermansson). Methods for Capturing Particles in Benthic Animals (R.S. Wotton). Zooplankton Particle Selection and Feeding Mechanisms (H.A. Vanderploeg). Particulate and Dissolved Organic Matter as Food (R.S. Wotton). The Functional Significance of Selection of Particles by Aquatic Animals during Building Behavior (D. Dudgeon). Index.