This southern door is called the Portail de la Calende from the confrerie of that name, but the derivation is rather uncertain, and some authorities consider it refers to certain ecclesiastical assemblies, distinct from the synod, which were held four times a year in this part of the Cathedral. The plan of the quatrefoils is much the same as that of the "Libraires." Within the tall embracing arch it is indeed identical, but upon the arch itself fourteen panels are set on each side, and outside it are no less than three double clusters both to right and left, which increases the total of panels to 227. In this enormous number, I have already mentioned one; but perhaps the best known is that which illustrates a very popular mediaeval legend, the "Lai d'Aristote," which also recurs in the misereres of the choir. It suggests the eternal supremacy of woman over man, even the wisest, by representing the typical philosopher of the middle ages saddled and bridled by a gay lady of Alexander's court, who sits upon his back and whips him heartily. This is rather difficult to see, as it is high up on a buttress beneath a statue at the side of the Rue des Bonnetiers. From mythology you will find here countless sirens, some playing instruments before their victims, others, like the mermaid of the fable, admiring themselves in mirrors and waving a seductive comb. There is also yet another violin player, with his back towards you, playing to a dancer who is posturing head downwards on his hands, like the daughter of Herodias upon the west facade.