This antique text contains a comprehensive treatise on the structure of metals, with information on crystallographic methods, principles, and data. This text was originally intended to serve both as a text and as a reference book. The portions intended for classroom use have been written for courses in crystallography, particularly the courses offered to students of metallurgy. It is primarily intended for graduate courses, but a number of the chapters are at a level appropriate for advanced undergraduate courses in applied x-rays, crystallography, and physical metallurgy. The chapters of this book include: 'The Fundamentals of Crystallography', 'The Stereographic Projection', 'X-Rays', 'Rotating-Crystal Methods', 'The Powder Method', 'The Determination of Crystal Structure', 'Pole Figures and Orientation Determination', 'Determination of Constitution Diagrams with X-Rays', etcetera. This text was originally published in 1932, and we are proud to republish it now complete with a new introduction on the subject.