P. T. Barnum,
The Humbugs of the World — Chapter XIII
(1866)
“ Some of the mortals present, one at a time, put their fingers, by request, against the blankets, through which those members are gingerly squeezed by what might be a hand, if there was one under the table. A person being told to take hold of the top of the table at the ends, he does so, and finds it so heavy that he can barely lift it. Setting it down, he is told to raise it again several inches; and at the second lifting it is no heavier than one would naturally judge such a piece of furniture to be. Another person is asked to lift the end furthest from the medium ”
