I. General Properties of the Nucleus.- 1. Introduction.- 2. Quantum States, Binding Energy, Binding Fraction.- 3. Stable and Unstable Nuclei, Fission, Alpha-Decay, Beta-Decay.- 4. Size of the Nuclei.- 5. The Coulomb Barrier.- 6. Angular Momentum, Spin.- 7. Electric and Magnetic Moments.- 8. Statistics.- Symbols.- II. TWO-BODY PROBLEMS AT LOW ENERGIES.- 1. Introduction.- 2. The Ground State of the Deuteron; Simplified Discussion (Central Forces Assumed).- 3. Neutron-Proton Scattering.- 4. Proton-Proton Scattering.- 5. The Tensor Force.- Symbols.- III. Nuclear Forces.- 1. Introduction.- 2. Stability of a nucleus against Collapse. The Impossibility of Attractive Forces between All Pairs.- 3. Exchange Forces.- 4. The Saturation Conditions.- 5. The Isotopic Spin Formalism.- Symbols.- IV. Two-Body Problems at High Energies.- 1. Introduction.- 2. Neutron-Proton Scattering at Energies between 10 and 30 Mev.- 3. Neutron-Proton Scattering at Energies Larger than 30 Mev.- 4. Proton-Proton Scattering.- Symbols.- V. Three- and Four-Body Problems.- 1. Introduction.- 2. The Ground State of the Triton; Central Forces.- 3. The Ground State of the Alpha-Particle; Central Forces.- 4. H3 and He3: The Equality of Neutron-Neutron and Proton-Proton Forces.- 5. The Ground State of the Triton; Tensor Forces.- Symbols.- VI. Nuclear Spectroscopy: I. General Theory.- 1. The Systematics of Stable Nucle.- 2. The Semi-Empirical Mass Formula of Weizsäcker.- 3. Detailed Study of the Symmetry Effect.- 4. The Symmetry Energy and the Systematics of Stable Nuclei.- 5. Nuclear Magnetic Moments in Light Elements.- 6. The Spectroscopic Classification of Nuclear Energy Levels.- Symbols.- VII. Nuclear Spectroscopy: II. Special Models.- 1. Introduction.- 2. The Uniform Model of Wigner.- 3. TheIndependent-Particle Model.- 4. The Alpha-Particle Model of the Nucleus.- 5. The Liquid Drop Model.- Symbols.- VIII. Nuclear Reactions: General Theory.- 1. Introduction.- 2. Cross Sections.- 3. The Compound Nucleus, Continuum Theory.- 4. Determination of Cross Sections, Continuum Theory.- 5. Transmission of Potential Barriers.- 6. The Decay of the Compound Nucleus.- 7. Resonance Theory; Qualitative Treatment.- 8. Resonance Theory; Determination of Cross Sections.- 9. Resonance Theory; Decaying States of the Compound Nucleus.- 10. Spin And Orbital Angular Momentum.- Symbols.- IX. Nuclear Reactions; Application of the Theory to Experiments.- 1. Introduction.- 2. Neutron-Induced Reactions.- 3. Proton- and Alpha-Particle-Induced Reactions.- 4. Neutron-, Proton-, and Alpha-Particle-Induced Reactions at Ultrahigh Energies.- 5. Reactions with Light Nuclei.- 6. Deuteron-Induced Reactions.- Symbols.- X. Formal Theory of Nuclear Reactions.- 1. The Scattering Matr.- 2. Conservation and Reciprocity Theorems for Nuclear Reactions.- 3. The Angular Distribution of Reaction Products.- 4. The Wigner Many-Level Formula.- Symbols.- XI. Spontaneous Decay Of Nuclei.- 1. Energetic Considerations.- 2. General Theory of Alpha-Decay.- 3. Discussion of Experimental Data.- Symbols.- XII. Interaction of Nuclei with Electromagnetic Radiation.- 1. Introduction.- 2. Multipole Radiation and Selection Rules.- 3. The Probability of Multiple Emission and Absorption.- 4. Radiative Transitions in the Two-Body Problem.- 5. Internal Conversion.- 6. Transitions Between Low-Lying States Of Nucle.- 7. Transitions Involving Highly Excited States.- XIII. Beta-Decay.- 1. Introduction.- 2. The Neutrino Hypothesis and the Shape of the Beta-Spectrum Selection Rules for "Allowed" Transitions.- 3. Orbital ElectronCapture.- 4. The Half-Lives of Beta-Emitters and Evidence Concerning the Selection Rules in Allowed Transitions.- 5. Detailed Theory Of Beta-Decay; Transitions Of Order.- 6. Determination of Matrix Elements; Favored and Unfavored Transitions.- 7. Beta-Transitions of Higher Order.- Symbols.- XIV. Nuclear Shell Structure.- 1. Evidence for the Existence Of "Magic Numbers".- 2. The Nuclear Shell Model.- 3. General Considerations.- Symbols.- Appendix A. Angular Momentum Operators and Eigenfunctions.- 1. Rotations and Angular Momenta.- 2. Spherical Harmonics.- 3. Expansion of a Plane Wave into Spherical Waves.- 4. Intrinsic Spin.- 5. Vector Addition of Angular Momenta.- Symbols.- Appendix B. Multipole radiation.- 1. Vector Spherical Harmonics.- 2. Electric and Magnetic Multipole Expansion in Free Space.- 3. Energy and Angular Momentum of the Multipole Radiation.- 4. The Sources of Multipole Radiation; Multipole Moments.- 5. Expansion of a Plane Wave into Multipole Fields.- 6. The Absorption Probability of a Light Quantum.- Symbols.- References.