Almost immediately faint raps came upon the table, and I asked: "Are you there, 'Mitchell'?"

Tap, tap, tap—"Yes."

"Are we sitting right?"

Tap, tap, tap—"Yes," answered the force, in a grave and deliberate way.

"As to these raps," I remarked, "they are easily simulated, but they have been absolutely proven by several of our best investigators. They have been obtained on a sheet of paper held in the air, on pencils, on a strip of cloth, on an open umbrella—under every possible condition. Maxwell secured them by pinching his own ear or by squeezing the arm of his neighbor. I have heard them on a man's shirt-front. They are the first manifestations of intelligent spirit power, and may be regarded in the light of established fact."

"I wouldn't be hasty about admitting even that," remarked Miller. "In the dark—or in the light—these obscure sounds may seem very ghostly, and yet be due to purely physical causes."

We sat in silence for a few moments, and at last I asked: "Is any spirit present?"

Almost immediately a childish voice came from the direction of the psychic, apparently issuing from her lips. "Mr. Mitchell would like to have you tie the threads to the legs of the table."

"Are you 'Maud?'" I asked.

"Yes, I am Maudie," she answered. "Mr. Mitchell wants to try some experiment. He wishes you to tie the threads to the legs of the table."