This monograph suitable for use as an advanced textpresents the statistical mechanics of solids from theperspective of the material properties of the solid state.The statistical mechanics are developed as a tool forunderstanding properties and each chapter includes usefulexercises to illustrate the topics covered. Topics discussedinclude the theory of the harmonic crystal the theory offree elcetrons in metal and semiconductors electrontransport alloy ordering sufaces and polymers.