Slavery exists by birth and conquest. Rice, Indian corn, sugar-cane, indigo, and coffee are the common products of the Sultanate. The chief export is pearls, for which the natives dive often a hundred feet. They frequently attack sharks, which they fight with the deadly kris, never failing to come off victors. MANILA. The Old City. Manila, the capital of the Philippines, is situated on the island of Luzon, at the mouth, and on the left bank, of the river Pasig. It is in N. lat. 14° 36', by E. long., 20° 57'. The city was founded in 1571. The present fortifications and the walls and battlements of the old city were built by Chinese labor in 1590, in the time of Governor-General Gomez Perez Dasmariñas. The walls are 2-1/4 miles long and are mounted with old and useless cannon. These, however, were quite formidable in the early days of the colony, and did great service against the successive invaders that threatened its peace and safety. The old city is almost surrounded by water. On the north is the Pasig; on the west the sea; while moats flank the other two sides. These moats are connected with the river by sluices; but they are sadly in need of repair, and are filled with stagnant water and putrid matter,--a continual menace to the health of the city. Until 1852 the drawbridge, connecting the old city with the new, was raised at night and the city closed, presenting the curious fact of a feudal Spanish city in the heart of the tropics. In the citadel are the Government offices; also the Post, Telegraph, and Custom offices, various convents and colleges, an Artillery depot, the Cathedral, and eleven other churches. This part of the city presents a dilapidated and mediæval appearance. The dull, narrow streets have a sombre, monastic aspect; and one, therefore, is not surprised to find that the gloomy superstitions of the 15th century hold Cimmerian sway here, undisturbed by the dawn of Science. It seems the fit capital of a despotism, a suitable home for tyranny and priestcraft. Manila Bay is thirty miles from north to south, and about twenty-five miles wide. On each side the entrance are steep volcanic mountains. Ten miles from Manila, near the entrance of the bay, lies Cavité, which contains about 5,000 people. Here also is the arsenal, a patent slip, and a garrison of 500 men. In the channel lies the island of Corregidor, 640 feet high, and just beyond, the island of Caballo, 420 feet high, both fortified. On each island stands a lighthouse. Other fortified points are San José and Tibonis. Manila, however, is, like Batavia and Calcutta, a great trade-centre. But I must leave the old city to find any signs of life and progress. Binondo and the Suburbs.