Crystal structure--Crystal diffraction and the reciprocal lattice--Crystal binding--Phonons I. Lattice vibrations--Phonons II. Thermal properties--Free electron Fermi gas--Energy bands--Semiconductor crystals--Fermi surfaces and metals--Plasmons, polaritons, and polarons--Optical properties and excitons--Optical properties and excitons--Superconductivity--Dielectrics and ferroelectrics--Diamagnetism and paramagnetism--Magnetic resonance and masers--Point defects and alloys--Dislocations