This classic book offers a comprehensive introduction to the subject of crystallography. Split into two parts: 'The External Symmetry of Crystals' and the 'Symmetry of the Internal Arrangement', and each broken down into many chapters, this book would make an invaluable addition to the bookshelf of anyone with an interest in the subject. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.