The magician's own book, or The whole art of conjuring (1862)
Arnold, George, 1834-1865, Cahill, Frank · New York, Dick & Fitzgerald · leaf 190
g, toenable you to see the arrangement of the interior, a, b c,and D, are four small pieces of looking-glass, all placed atan angle of 45°, with respect to those sides of the box onwhich they are fixed ; at e and g, two flat pieces of glassare inserted, as in the eye-glass of a telescope.… … is evidently not the case. The cause of this is readily ex-plained. The image of the object at o is received on the look-ing-glass A, by which it is reflected to b, as it is again fromB to c, and afterwards to d; and this last image in d is seenby the eye of the spectator placed at e, in the same…
Magic tricks
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