Which preposition to use with anilities

with Occurrences 1%

It is impossible (every respectfulness of endeavour notwithstanding) to maintain the gravity of one's imagination at the thought of a set of doctors of the Church, Venerable Bede included, wheeling about in giddy rapture like so many dancing dervises, and keeping time to their ecstatic anilities with voices tinkling like church-clocks.

Which preposition to use with  anilities