Note 29 — Front matter

I.e., On the treading-under-foot of demons. (Calcatio, a mediæval word, means usually threshing, i.e., by treading out; but Jaquier must have had in view its literal sense.) The book has never been printed, but exists in MS. (according to Quétif and Échard) at Louvain and elsewhere. A copy at St. Omer is entitled: “De calcatione malignorum spirituum.” The book begins: “Duo magna incommoda inter caetera incurrit genus humanum.”