The caul and its relation to drowning, lawyers and sorcerers.

The caul is a fragment of amniotic membrane that is occasionally observed adherent to the head and face of a newborn child. A dried caul has been in The University of Adelaide Pathology Archive for a number of years. Beliefs in the supernatural powers of these detached membranes are found in the historical traditions of a wide variety of cultures, resulting in cauls being regularly dried out and sold as talismans. It was thought that lawyers could sway opinions in court more readily if they possessed a caul, and that such a token could either be used to facilitate black magic rituals or alternatively to thwart the machinations of sorcerers and witches. A pervasive belief was that a caul would guarantee that the owner would never drown resulting in cauls being sold for between ₤10 to ₤30 in the seventeenth century at a time when considerable naval warfare and maritime exploration were occurring. Thus, rather than illuminating pathophysiological processes occasional specimens in pathology archives may remind us of folk traditions and superstitions that have long since been forgotten in modern times.