“It is all a trick?”
“Absolutely. Spirits, is he not easily fooled?”
Rap, rap, rap!
“I can always get an affirmative answer to that question,” she remarked.
Then I addressed certain suppositions to her. At last she said, “Yes, you have hit it. It is, as you say, the manner in which the joints of the foot can be used without lifting it from the floor. The power of doing this can only be acquired by practice begun in early youth. One must begin as early as twelve years. Thirteen is rather late. We children, when we were playing together, years ago, discovered it, and it was my eldest sister who first put the discovery to such an infamous use.
“I call it infamous, for it was.”