The great fire swept a large district of the city here, which has been but little rebuilt, and the view of the Marmora is very fine. On the opposite Asiatic shore Mount Olympus, with its snow-crowned summit, fades away into the blue of the heavens. This is a glorious atmosphere, at least at this season, the air clear and bracing, the sky a beautiful blue and the sunsets golden. In winter it is cold, muddy and cheerless, and in midsummer the simoom which sweeps up the Marmora from Africa and the Syrian coast renders it very unhealthy for Europeans to remain in the city. The simoom is exceedingly enervating in its effects, and all who can spend the summer months on the upper Bosphorus, where the prevailing winds are from the Black Sea and the air is cool and healthful. Nearly all the foreign legations except our own have summer residences there and beautiful grounds. [Illustration: OBELISK OF THEODOSIUS.] Following the old aqueduct built by the emperor Hadrian, which still supplies Stamboul with water, and is exceedingly picturesque with its high dripping arches covered with luxuriant ivy, we reached the walls which protected the city on the land-side, and then, threading our way through the narrow, dirty streets, we returned to the Golden Horn. I do not wonder, after what I have seen of this part of Stamboul, that the cholera made such ravages here a few years since. I should think it would remain a constant scourge. Calling a caïque, we were rowed up the Golden Horn to the Sweet Waters, but its tide floated only our own boat, and the banks lacked the attraction of the gay groups which render the place so lively on Fridays. We were served with coffee by a Turk who with his little brasier of coals was waiting under a wide-spreading tree for any chance visitor, and after a short stroll on the bank opposite the sultan's pretty palace we floated gently down the stream till we reached the Golden Horn again. On a large meadow near the mouth of the Sweet Waters some Arabs were camped with an immense flock of sheep. They had brought them there to shear and wash the wool in the fresh water, and the ground was covered with large quantities of beautiful long fleece. The shepherds in their strange mantles and head-dresses looked very picturesque as they spread the wool and tended their flocks. Our _caïquegee_, as the oarsman of a caïque is called, ought not to be overlooked. His costume was in keeping with his pretty caïque, which was painted a delicate straw-color and had white linen cushions. He was a tall, finely-built fellow, a Cretan or Bulgarian I should think, for he looked too wide awake for a Turk. The sun had burned his olive complexion to the deepest brown, and his black eyes and white teeth when he smiled lighted up his intelligent face, making him very handsome. He wore a turban, loose shirt with hanging sleeves and voluminous trousers, all of snowy whiteness. A blue jacket embroidered with gilt braid was in