The magician's own book, or The whole art of conjuring (1862)
Arnold, George, 1834-1865, Cahill, Frank · New York, Dick & Fitzgerald · leaf 179
COMPOSITION OF LIGHT. The beam of light passing through the prism is decom-posed, and the spaces occupied by the colors are in the fol-lowing proportions : red, 6 ; orange, 4 ; yellow, 7 ; green, 16S THE magicians OWN BOOK. … 8; blue, 8; indigo, 6; violet, 11. Now, if jou paste a sheet of white paper on a circular piece of board about sixinches in diameter, and divide it witha pencil into fifty parts, and paintcolors in them in the proportionsgiven above, painting them dark inthe center parts, and gradually faint-er at…
Magic tricks
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