Quantum methods develop mathematical models: crystal structure, magnetic susceptibility, electrical and optical properties, thermal properties, etc. Unabridged republication of the original (1936) edition.

Review:
As a graduate student first learning about Fermi surfaces and metals I bought a copy of this book in a used book store. It was an excellent sorce for the basic ideas behind modern metals physics. IF you really appreciate old science books that have a lot of insight and like to work through physical concepts with intuitive models (as opposed to LARGE scale computation) then you will enjoy this book. A must have for collectors of old science tests!