MacMahon set out to demonstrate the principles by which an interested reader, with some work and thought, could create his or her own amusements. It also contained a completely original approach to visual puzzles, where edge matching could be forced by altering the profiles of the edges. The results of these transformations are remarkably similar to work produced by Maurits Escher, and predate him by a decade and a half. As well as being important as a resource the subject is by no means exhausted. The ebook contains both the original mono edition and a colorised version, with Nets, MacMahon's Patents and other Papers. The ebook runs to over twice the extent of the paper volume.