DEMONSTRATION VII. Have the audience select some small article, like a
scarf-pin, ring, etc., and hide it on the person of some one of the
audience. Then you are to find it. This demonstration combines the
features of Demonstration II, and Demonstration III, that is you have
first to find the person, as described in Demonstration II, and then
the object which is practically a variation of Demonstration III. Study
the details of Demonstration III, and practice the present demonstration
in private before trying it in public.