Our magic : the art in magic, the theory of magic, the practice of magic (1911)
Maskelyne, Nevil, 1863-1924 · New York : E.P. Dutton & Co. · leaf 275
MAGICAL INVENTIONS 257 very thing! The central screw which fastens the glass top to its supporting pillar may form one pole of an electro-magnet concealed within that pillar. And if the hollow head of the pillar be made of iron, it will form the second pole of the magnet it con- … Figure B. tion will be the means of exciting the electro-magnet from without. The most convenient connection, of course, is through the feet of the table. The tripod and pillar, being of metal, will provide one of the conductors, the other may readily be made by passing an insulated wire down the…
Magic tricks · Magic shows
Internet Archive · The Library of Congress · Public domain (published before 1931). Free to use for anything.
![An illustration from [Roller-skate patents] (1861)](https://img.insideoutlibrary.com/img/200/ia-rollerskatepaten00unit-702-0.webp)
