Aghadir has a spacious and most secure port, which is the last port southwards on the Atlantic. Indeed, this bay is the finest roadstead in the whole empire. Mr. Jackson says, that during his residence at Aghadir of three years, not a single ship was lost or injured. The principal battery of Aghadir, a place equally strong by nature and art, is half way down the western declivity of the mountain, and was originally intended to protect a fine spring of water close to the sea. This fort also commands the approaches to the town, both from the north and the south, and the shipping in the bay. Santa Cruz was converted from a fisherman's settlement into a city, and was fortified by the Portuguese in 1503. Muley Hamed el-Hassan besieged it in 1536 with an army of fifty thousand men, and owing to the accident of a powder-magazine blowing up and making a breach, the Sultan forced an entrance, to the astonishment of the Portuguese, who were all slaughtered. In the reign of Muley Ismail, Santa Cruz was the centre of an extensive commerce carried on between Europe and the remotest regions of Africa, which obtained for it the name of Bab-el-Soudan, (Gate of Soudan.) The inhabitants became rich and powerful, and, as a consequence which so frequently happens to both the civilized and the barbarian, insolent and rebellious. In 1773, Sidi Mohammed was obliged to march out against the town to crush a rebellion; and this done with great slaughter, he ordered all the European merchants to quit the place and establish themselves at Mogador. The father of this prince had sworn vengeance against the haughty city, but died without accomplishing his sanguinary threats. The son, however, did the work of blood, so faithful to vows of evil and violence is man. Since that period, Aghadir has dwindled down to nothing, six hundred inhabitants, and others say only one hundred and fifty. The greater part of these are Jews, who have the finest women in all the country. Mr. Davidson says the population of Aghadir is forty-seven Mohammedans, and sixty-two Jews. At Fonte, the port, are about two hundred Moors. Were any European power to conquer Morocco, Aghadir would certainy be re-established as the centre of the commerce in the south. To a maritime nation like England, the repair and re-opening of its fine port would be the 6rst consideration, and doubtless a lucrative and extensive commerce could be established between Aghadir and Timbuctoo. The city is seven leagues south of Cape Gheer, in latitude 30° 35'.