Hoffmann (Professor), 1839-1919 · New York : E.P. Dutton & Co. ; London : George Routledge & Sons · leaf 61
a regular con juring-t able, traps are, as a matter of course, made of metal, but in a home-made table or in a box, as described in More Magic (p. 7), designed to take the place of a table, the amateur will find wood a better material for the traps, and rubber bands the best form of spring. Fig. 32… … Fig. 33. however, one of the squares is a trap, whose construc- tion may be gathered from an inspection of Figs. 33
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-1183-530.webp)
