Of the syrinx there are extant some illustrations of the ninth and tenth centuries, which exhibit the instrument with a number of tubes tied together, just like the Pandean pipe still in use. In one specimen engraved from a manuscript of the eleventh century the tubes were inserted into a bowl-shaped box. This is probably the frestele, fretel, or fretiau, which in the twelfth and thirteenth centuries was in favour with the French ménétriers.