Hoffmann (Professor), 1839-1919 · New York : E.P. Dutton & Co. ; London : George Routledge & Sons · leaf 98
Later Magic 7o this tube being passed over it. When the inner line is slack the hook is in the condition shown in Fig. 57, but … Fig. 57. Fig. 58. when it is drawn taut the point of the inner hook is raised, as in Fig. 58. The upper end of the cord is out of sight, but if the spectator were permitted to trace it to the point of at- tachment, he would find the arrangement depicted in Fig. 59. Here a a is a brass plate six…
