In the charters defining the privileges granted to the Genoese colony in Constantinople during the twelfth century, mention is made of a “Porta Bonu” and a “Porta Veteris Rectoris.”[807] As both were associated with the Scala, or Pier, at the service of that colony, they were doubtless the same gate under different names; the former appellation designating it by the proper name of the officer connected in some way with the entrance, the latter by his official title. Nothing is known concerning the Rector Bonus; the name and title are at once Byzantine and Italian. Now, the Genoese quarter in the twelfth century lay to the east of the Gate of the Neorion, and consequently the Porta Bonu, or Porta Veteris Rectoris, must be sought in that direction. It stood, probably, where Sirkedji Iskelessi is now situated. Near this gate must have been the Scala Chalcedonensis and the Portus Prosphorianus, which the _Notitia_ places in the Fifth Region.[808] The former, as its name implies, was the pier frequented by boats plying between the city and Chalcedon; it is mentioned twice, as the point at which relics were landed in solemn state to be carried thence to St. Sophia.[809] The Portus Prosphorianus[810] was in the bay which once indented the shore immediately to the east of the Gate of Bonus, where the line of the city walls described a deep curve. The name is probably derived from the word Πρόσφορον, and denoted that the harbour was the resort of the craft which brought products from the country to the markets of the city.[811] The harbour was also called the Phosphorion, as though associated with the sudden illumination of the heavens which saved the city from capture by Philip of Macedon. But its most common designation was τὸ Βοσπόριον, ὁ Βοόσπορος, ὁ Βόσπορος, probably because the point to which cattle were ferried across from Asia. The cattle-market was held here until the reign of Constantine Copronymus, who transferred it to the Forum of Taurus;[812] here also stood warehouses for the storage of oil, and granaries, such as the Horrea Olearia, Horrea Troadensia, Horrea Valentiaca and Horrea Constantiaca.[813] The granaries were inspected annually by the emperor.[814] According to Demosthenes, the three statues erected by Byzantium and Perinthus in honour of Athens for the aid rendered against Philip of Macedon were set up at the Bosporus.[815] But it is not certain whether the great orator used the name in a general sense, or with special reference to this port. The great fire in the fifth year of Leo I. started in the market near this harbour, through the carelessness of a woman who left a lighted candle on a stall at which she had bought some salt fish.[816]