"I think you had better start from the door again," I suggested. "Then you can get a clear run."

They took up their original positions.

"You must think hard, please," said Simms again. "My mind is a perfect blank, and yet I can feel nothing coming."

Jack made terrible faces at the needle. Then, without warning, Simms flopped on to the floor at full length, pulling Jack after him.

"You mustn't mind if I do that," he said, getting up slowly.

"No," said Jack, dusting himself.

"I felt irresistibly compelled to go down," said Simms.

"So did I," said Jack.

"The needle is very often hidden in the floor, you see. You are sure you are looking at it?"

They were in a corner with their backs to it; and Jack, after trying in vain to get it over his right shoulder or his left, bent down and focussed it between his legs. This must have connected the current; for Simms turned right round and marched up to the needle.