The magician's own book, or The whole art of conjuring (1862)
Arnold, George, 1834-1865, Cahill, Frank · New York, Dick & Fitzgerald · leaf 366
at thatend where the sight hole a is, scrape the quicksilver off theglass, through which the eye can view the objects. Cover the box with gauze, over which place a piece oftransparent glass, which is to be well fastened in. Letthere bo two grooves at each of the places c d e f, to receiva… … &c. ; and on two other boards, the same subject on oneside only, and cut out all the white parts : observe also,that there ought to be in one of them some object relativeto the subject, placed at a, that the mirror placed at b maynot reflect the hole on the opposite side. The boards painted on…
Magic tricks
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