The magician's own book, or The whole art of conjuring (1862)
Arnold, George, 1834-1865, Cahill, Frank · New York, Dick & Fitzgerald · leaf 180
to ac-commodate the lens to nearand distant objects. Whenthe rays proceeding from anobject without fall upon themirror, they are reflected uponthe lens f, and brought to fallon the bottom of the box, orupon a table placed horizon-tally to receive them, which may be seen by the spectatorwhose eye is…
Magic tricks
Internet Archive · University of Pittsburgh Library · Public Domain Mark 1.0. Free to use for anything.
