I have already mentioned the mosque of Pialeh Pasha and the naval station which are among the greater lions of the left bank. A detail of history connected with this famous shipyard is that we perhaps get our word arsenal from it, through the Italian _darsena_. The accepted derivation is from the Arabic _dar es sanaat_, house of construction, from an ancient shipyard in Egypt captured by the founder of this Arsenal. But as likely an origin is the Turkish word—from the Persian, I believe—_terssaneh_, the house of slaves. At all events, this is where the great bagnio of the galley-slaves used to be. These were Christians captured in war; and of course the Christian powers repaid the compliment by capturing all the Turks they could for their own galleys. At all times during the fifteenth, sixteenth, and seventeenth centuries there were from three to four thousand slaves in the Arsenal, while several thousand more were chained to the oars of the imperial galleys. No less than fifteen thousand were said to have been freed at the battle of Lepanto. As the Turks became less warlike the number naturally declined, and came to an end with the abolition of slavery in 1846. One of the principal activities of the Catholic missions was among the inmates of this and other bagnios. The fathers were allowed access to the Arsenal and even maintained chapels there, confessing the slaves, arranging when they could for their ransom, and heroically caring for them through epidemics. St. Joseph of Leonissa, one of the pioneer Capuchins, caught the plague himself from the slaves but recovered to labour again in the bagnio—so zealously that he even aspired to reach the ear of the Sultan. He was accordingly arrested and condemned to death. The sentence was already supposed to have been executed when he was miraculously rescued by an angel and borne away to his native Italy, living there to a ripe old age. If the angel might have been discovered to bear some resemblance to the Venetian Balio, his intervention doubtless seemed no less angelic to the good missionary. Another Turkish settlement grew up on the east side of Galata wall at Top Haneh, Cannon House. The place has been the seat of artillery works from the beginning of the Turkish era, for it must be remembered that Mehmed II, in the siege of Constantinople, was the first general to prove the practicability of cannon, and that during the whole of their martial period the Turks had no superiors in this branch of warfare. The conqueror turned a church and its adjoining cloisters into a foundery, and his son Baïezid II built barracks there for the artillerymen, while Süleïman I and Ahmed III restored and added to these constructions. There was also another shipyard at Top Haneh, and another Prince of the Sea is buried there near the mosque he built. [Illustration: The mosque of Don Quixote and the fountain of Sultan Mahmoud I]