S.F. Lincoln and A.E. Merbach, Substitution Reactions of Solvated Metal Ions. R.D. Hancock and A.E. Martell, Lewis Acid-Base Behavior in Aqueous Solution: Some Implications for Metal Ions in Biology. P.D. Lickiss, The Synthesis and Structure of Organosilanols. K.E. Liu and S.J. Lippard, Studies of the Soluble Methane Monooxygenase Protein System: Structure, Component Interactions, and Hydroxylation Mechanism. G. Parkin, Alkyl, Hydride, and Hydroxide Derivatives of the s- and p-Block Elements Supported by Poly(pyrazolyl)borato Ligation: Models for Carbonic Anhydrase, Receptors for Anions, and the Study of Controlled Crystallographic Disorder. Chapter References. Subject Index. Contents of Previous Volumes, 32-41.