Henry Dudeney was one of the most important puzzlists of the last several centuries, and 'The Canterbury Puzzles' is a classic in the field, worth the attention of anyone interested in this topic.
Unfortunately, the posted pdf version (at least) of this book does not include the all-important accompanying puzzle diagrams, and is not worth downloading.
The seven pages of text making up this download represent a full and careful history (as of 100 years ago) of this ancient, fascinating game.
However, this information was intended only as a supplement to the main content of the book 'The Game of Go' by Arthur Smith, which was the first English-language treatment of the game, and is by itself likely to be of only limited interest to modern readers.