The portal is profusely carved and bears an inscription upon the stylobate (the letters of which are of the 13th century), giving the various duties of the grave-diggers, amongst others the cleansing of the vaults of the roof as well as the lower part of the church on the feast of S. Martin, in order to be tidy for the dedication festival which fell two days later. As in many other churches, there are two lions on each side of the arch, probably the supports formerly of some heraldic shields. This, no doubt, is the origin of the formula, which terminates certain ecclesiastical judgments pronounced at the threshold of the temple, _Datum inter duos leones_. The tympanum bas-relief has been restored. It represents the charity of S. Martin, who is one of the patrons of the church, and whose mutilated mantle, or a portion of it, has been one of the cherished relics of S. Séverin since the 14th century. There is also a chapel dedicated to the venerable bishop of Tours, which was formerly completely covered with _ex voto_ horse-shoes, the gifts of thankful travellers; for S. Martin having been on horseback when he divided his cloak, became the patron of the travelling community. The western _façade_ is composed of portions of the portal of S. Pierre-aux-Bœufs in the Cité, which was demolished in 1837, and is, the little which has been left unrestored, of the 13th century. S. Pierre was situated in the Rue d'Arcole; the only fragment remaining being a _bas-relief_ fixed against the wall of the house which occupies the site of the church, representing an _Ecce Homo_ surrounded with the emblems of the Passion. Above the porch of S. Séverin are an open work gallery, a rose window and a cornice upon which a party of little animals are playing among some foliage, all in _Flamboyant_ style. The statue of the Virgin is quite modern. The whole of the chapels, as well as the greater part of the nave, are of the 15th and 16th centuries; but the first three bays of the nave are of a totally different style; the form of the arches and of the windows shows the craftsmanship of the 13th century artists. Birds and beasts, natural and grotesque, form gargoyles, shooting the rainwater from their open mouths. At the north-west end of the chapels, an elegantly carved canopied niche encloses the patron Saint, and near him is an inscription inviting the passers-by to pray for the souls of the departed _Bonnes gens qui p cy passes_ _Pries Dieu pour les trespasses._ The last word has been mutilated. The interior consists of a nave and double aisles. The triforium is very similar to that of Westminster Abbey church; but at the commencement of the apse, the 13th century arches were filled in with round-headed ones, Cupid-like Cherubs being placed between the two to "ornament" the intervening space, and the pillars converted into marbled pilasters. [Illustration: INTERIOR OF SAINT-SÉVERIN.]