PROGRESS IN INORGANIC CHEMISTRY; Contents; Cyclopentadienyl and Arene Metal Compounds; Interstitial Compounds of Graphite; Uber Schwefel-Stickstoff-Verbindungen; Metal-Ammonia Solutions; Isocyanide Complexes of Metals; The Effect of Inner Orbital Splitting on the Thermodynamic Properties of Transition Metal Compounds and Coordination Complexes; The Structure and Properties of Mixed Metal Oxides; Author Index; Subject Index.