Let us now proceed along the Via Calzaioli (which means street of the stocking-makers), running away from the Piazza del Duomo to the Piazza della Signoria. The fascinatingly pretty building at the corner, opposite Pisano's Baptistery doors, is the Bigallo, in the loggia of which foundling children used to be displayed in the hope that passers-by might pity them sufficiently to make them presents or even adopt them; but this custom continues no longer. The Bigallo was designed, it is thought, by Orcagna, and it is worth the minutest study. The Company of the Bigallo, which is no longer an active force, was one of the benevolent societies of old Florence. But the greatest of these societies, still busy and merciful, is the Misericordia, whose head-quarters are just across the Via Calzaioli, in the piazza, facing the campanile, a company of Florentines pledged at a moment's notice, no matter on what they may be engaged, to assist in any charitable work of necessity. For the most part they carry ambulances to the scenes of accident and perform the last offices for the dead in the poorer districts. When on duty they wear black robes and hoods. Their headquarters comprise a chapel, with an altar by Andrea della Robbia, and a statue of the patron saint of the Misericordia, S. Sebastian. But their real patron saint is their founder, a common porter named Pietro Borsi. In the thirteenth century it was the custom for the porters and loafers connected with the old market to meet in a shelter here and pass the time away as best they could. Borsi, joining them, was distressed to find how unprofitable were the hours, and he suggested the formation of a society to be of some real use, the money to support it to be obtained by fines in payment for oaths and blasphemies. A litter or two were soon bought and the machinery started. The name was the Company of the Brothers of Mercy. That was in 1240 to 1250. To-day no Florentine is too grand to take his part, and at the head of the porter's band of brethren is the King.