Nuclear Isomerism.- A. Introduction.- B. History of nuclear isomerism.- C. Radiations from isomeric nuclei.- D. Experimental methods.- E. Present knowledge of nuclear isomers.- F. Comparative lifetimes.- References.- Alpha Radioactivity.- A. Alpha energies and nuclear states.- B. Kinetics of alpha decay (even-even type).- C. Kinetics of alpha decay of odd nucleon types.- D. Illustrative individual decay schemes.- General references.- The Transuranium Elements.- A. General considerations. The place of the heaviest elements in the periodic system.- B. The individual elements.- C. Systematics of nuclear data in the transuranium element region.- General references.- The Nuclear Photoeffect.- A. Sources of ?-rays and X-rays.- B. Theory of the photodisintegration of the deuteron.- C. Photodisintegration of the deuteron: Experiments.- D. Photodisintegration of nuclei beyond deuterium.- General bibliography.- Angular Correlations.- A. Introduction.- B. Mathematical preliminaries.- C. General theory of directional correlation for processes involving states of well-defined symmetry.- D. Particular processes involving states of well-defined symmetry.- E. Processes involving states not having well-defined symmetry.- F. Internal conversion electrons.- G. Processes involving simultaneous emission or absorption of two radiations.- H. Extra-nuclear fields.- J. Application of theory to mesons, heavy mesons and hyperons.- Index of notation.- Oriented Nuclei.- A. Oriented nuclear spin systems.- B. Production and properties of oriented nuclei.- C. Experimental results with oriented nuclei.- D. Polarized nuclear reactions.- E. The production and detection of polarized particles.- Review articles.- Sachverzeichnis (Deutsch-Englisch).- Subject Index (English-German).