E. F. Benson,
Visible and Invisible — Machaon
(1923)
“ With that came the end of the séance, which had lasted not more than an hour. Whatever the power was that had made Mrs. Forrest speak in that male voice and struggle, through that roundabout method of "swallow, swallow-tail, Machaon," to establish its identity, it now began to fail. Mrs. Forrest's pencil made a few illegible scribbles, she whispered a few inaudible words, and presently with a stretch and a sigh she came out of trance. We told her that the name of the control was established, but apparently Machaon meant nothing to her. ”
