From John Fisher's auction, lot 42.
Another of Eddie Joseph's manuscripts, heavily annotated by a previous owner (J. W. Lumley). This one deals with a clever and original idea, i.e. that the mentalist can discern the spectator's thoughts by observing their image reflected in a mirror.
A note in the text indicates that a number of improvements, by Mr. Lumley will appear soon in "The Magic Wand".