The Canterbury Puzzles especially on the history of

especially on the history of ancient Greek mathematics

these are the beings and ideas that flood through this collection of ghost stories by Algernon Blackwood (1869-1951)

books on detective stories

black president

The Canterbury Puzzles especially on the history of"There is really a practical utility in puzzle solving," remarked English mathematician and puzzle creator Henry Dudeney. "Regular exercise is supposed to be as necessary for the brain as for the body. Many of us are very apt to suffer from mental cobwebs, and there is nothing equal to the solving of puzzles and problems for sweeping them away. They keep the brain alert, stimulate the imagination and develop the reasoning faculties." One of England's