There is an essay by a historian (don't have my copy to hand so can't recall his name off hand) on "the flying perizoneum" in the Princeton Index of Christian Art's volume of papers, _Iconography at the Crossroads_, published by Princeton University Press two or three years ago. It was a somewhat flamboyant paper, but might have some additional information for you. Elizabeth Parker McLachlan, Art History, Rutgers [log in to unmask] %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%