Hoffmann, Professor, 1839-1919 · London : Frederick Warne · leaf 90
Fig. [)3. normal lid, and is the one first opened. This done, thesecond can be opened, as shown in the figure, and the snuf£is then accessible. Key to Trick or Secret Puzzles. $7 No. XL.—The Puzzle Ball. Solution. The secret here lies in the faet that one of the supposed orna-mental bosses is… … Fig. 94. the ball, its smaller end forming the centre of the boss onthe opposite side (see Fig. 94). By tapping this centre,which must be discovered by experiment, the boss is forcedout and the ball opened.
Puzzles
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-319-139.webp)
