At dusk the minarets are illuminated; a peal of cannon from the Arsenal, echoed by others from the forts along the Bosphorus, relieves the suffering followers of the Prophet, and after an hour of silence, during which they are all at home, feasting, the streets are filled with noisy crowds, and every coffee-shop is thronged. Every night there are illuminations along the water, which, added to the crowns of light sparkling on the hundred minarets and domes, give a magical effect to the night view of the city. Towards midnight there is again a season of comparative quiet, most of the inhabitants having retired to rest; but, about two hours afterwards a watchman comes along with a big drum, which he beats lustily before the doors of the Faithful, in order to arouse them in time to eat again before the daylight-gun, which announces the commencement of another day's fast. Last night was the holiest night of Islam, being the twenty-fifth of the fast. It is called the _Leilet-el-Kadr,_ or Night of the Predestination, the anniversary of that on which the Koran was miraculously communicated to the Prophet. On this night the Sultan, accompanied by his whole suite, attends service at the mosque, and on his return to the Seraglio, the Sultana Valide, or Sultana-Mother, presents him with a virgin from one of the noble families of Constantinople. Formerly, St. Sophia was the theatre of this celebration, but this year the Sultan chose the Mosque of Tophaneh, which stands on the shore--probably as being nearer to his imperial palace at Beshiktashe, on the Bosphorus. I consider myself fortunate in having reached Constantinople in season to witness this ceremony, and the illumination of the Golden Horn, which accompanies it. After sunset the mosques crowning the hills of Stamboul, the mosque of Tophaneh, on this side of the water, and the Turkish men-of-war and steamers afloat at the mouth of the Golden Horn, began to blaze with more than their usual brilliance. The outlines of the minarets and domes were drawn in light on the deepening gloom, and the masts and yards of the vessel were hung with colored lanterns. From the battery in front of the mosque and arsenal of Tophaneh a blaze of intense light streamed out over the water, illuminating the gliding forms of a thousand caïques, and the dark hulls of the vessels lying at anchor. The water is the best place from which to view the illumination, and a party of us descended to the landing-place. The streets of Tophaneh were crowded with swarms of Turks, Greeks and Armenians. The square around the fountain was brilliantly lighted, and venders of sherbet and kaïmak were ranged along the sidewalks. In the neighborhood of the mosque the crowd was so dense that we could with difficulty make our way through. All the open space next the water was filled up with the clumsy _arabas_, or carriages of the Turks, in which sat the wives of the Pashas and other dignitaries.