When I published Studies in Mystery, I was rather doubtful about its reception in wartime. But the first edition sold out in the first four weeks, and a second edition was found necessary. So this present book, a continuation of the first one, was proceeded with cheerfully, feeling that we had filled in a small corner in helping to brighten the gloomy hours of War.
Another twelve items, carefully explained, are again set out for your delight, and we sincerely hope, as we feel sure they will, that they come up to your expectations.
