Phonons.- Electronic Influence on Lattice Dynamics.- Phonon Calculations in Metals and Insulators.- Excitations in Superfluid Helium.- Hydrodynamic Excitations in Anharmonic Crystals and in Ferromagnets.- Electron-Phonon Interactions.- Electron Interaction with Surface Modes.- Electronic Transitions and Relaxation Phenomena in Polarons.- The Self-Energy Problem in Quantum Dielectrics.- Electrons and Phonons in Narrow Gap Semiconductors.- Light Scattering in Solids.- Resonant Raman Scattering in Semiconductors.- Seminars.- Formalism of an Ab Initio Calculation of Phonon Dispersion Curves in the Hartree-Fock Approximation (Abstract).- Two-Phonon Deformation Potentials, Second Order Raman Scattering, and Superconductivity in Degenerate Semiconductors.- Temperature Dependence of Free Polaron Optical Absorption.- Peierls-Fröhlich Instability and Superconductivity in Linear Chain Crystals.- The Absorption and the Ground State Energy of Free Polarons.- Experimental Studies on Insulators and Metals.- A Review of the Experimental Properties of Insulating Solids.- Optical Absorption and Photoemission Experiments on Metals and Alloys.- Author Index to Part B.- Subject Index to Part B.