The seventh builder of the city of Mákedún was, by the common consent of all the ancient historians, Vezendún, one of the grandsons of Yánkó Ibn Mádiyán, who, 5052 years after the death of Adam, being universal monarch, forced all the kings of the earth to assist him in rebuilding the walls of Mákedún, which then extended from Seraglio point (_Seráï búrunú_), to Silivrí (_Selymbria_), southwards, and northwards as far as Terkós on the Black Sea, a distance of nine hours’ journey. Both these towns were united by seven long walls, and divided by seven ditches a hundred cubits wide. The remains of these walls, castles, and ditches, are still visible on the way from Silivrí to Terkós; and the kháns, mosques, and other public buildings in the villages on that road, as Fetehkóï, Sázlí-kóï, Arnáúd-kóï, Kuvúk-dereh, ’Azzu-d-din-lí, Kiteh-lí, Báklálí, and Túrk-esheh-lí, are all built of stones taken from these walls; the remains of some of their towers and seven ditches appearing here and there. Chatáljeh, which is now a village in that neighbourhood, was then a fortified market-town close to the fortress of Islámbúl, as its ruins shew. The line of fortifications which then surrounded the city may still be traced, beginning from Terkós on the Black Sea, and passing by the villages of Bórúz, Tarápiyah (_Therapia_), Firándá near Rum-ili hisár, Ortahkóï, Funduklí, to the point of Ghalatah, and from thence to the lead-magazines, St. Johns fountain (_Ayá Yankó áyázmah-sí_), the Ghelabah castle, the old arsenal, the castle of Petrínah, the Arsenal-garden-Point, the castle of Alínah, the village of Súdlíjeh, and the convent of Ja’fer-ábád. All these towns and castles were connected by a wall, the circuit of which was seven days’ journey. _Concerning the Canal from the river Dóná_ (Danube). King Yánván, wishing to provide water for the great city of Islámbúl, undertook to make a canal to it from the Danube. For that purpose he began to dig in the high road near the castles of Severin and Siverin, not far from the fortress of Fet’h-islám, on the bank of that river; and by those means brought its waters to the place called Azád-lí, in the neighbourhood of Constantinople. He afterwards built, in the bed of the river, a barrier of solid stone, with an iron gate, which is still to be seen, as the writer of these sheets has witnessed three different times, when employed there on the public service. The place is now called the iron gate of the Danube (_Dóná demir kapú-sí_), and is much feared by the boat-men, who sometimes unload their vessels there, as, when lightened of their cargoes, they can pass over it in safety.