"Mercury, with his caduceus, summons the souls of the departed from Orcus, or the low world, as in the case of Protesilaus, for example, who obtained permission from Pluto and Proserpina to visit for a short period the regions of light." — Anthon, 1891

Mercury with caduceus

"Mercury, with his caduceus, summons the souls of the departed from Orcus, or the low world, as in the…