In his room on 49th Street he was involuntarily whirled out of his body onto a beach, returned deliberately to observe the process, saw his own body with its face veiled by cloud, failed to rouse his dancing partner and her parents, could not pass through the solid wall, knocked himself back into the body leaping head first from the 11th floor, and then realised he had given the wall its solidity — after which he simply imagined himself elsewhere and was there.