TOMBUCTOU, is placed on the following authorities: First, Mr. MATRA, the British Consul in the dominions of Morocco, says, on the authority of the natives, that Tombuctou is fifty days _caravan travelling_ from TATTAH, a place situated on the common frontiers of Morocco, Drah, and Zenhaga; and in the route from Morocco, and Suz, to Tombuctou. Tattah is ascertained in position, by a route of Ben Alli’s. He found it to be nine days and half from Morocco, and one day short of a station on the Wad-drah (or Drah River) which station was four days, or sixty-six miles lower down than _Tinjuleen_, a place in D’Anville’s and Delisle’s Maps of Africa. It was also twelve days journey from the City of Nun or Non, which city by Ben Alli’s account, is two days from the sea coast; and well known to be opposite to the Cape of the same name. These authorities enable us to place Tattah one hundred and seventy miles South South East from Morocco. Then, fifty days from Tattah to Tombuctou, at thirteen each day, produces six hundred and fifty miles. By Ben Alli’s report, Tombuctou is forty-eight days from the capital of Sultan Fullan, lying within the district of Gallam, on the River Senegal. The position of this place is not known to me; but by circumstances it must be near the river: and in using materials of so coarse a kind, trifles must not be regarded. Forty-eight days at thirteen each day, produce six hundred and twenty miles; and this line of distance meets that from Tattah, in latitude 19°. 40′. and nearly midway between Gallam and Cashna. In this position, it falls only twenty-eight miles to the North West of D’Anville’s Tombuctou. It appears that most of the road from Tattah to Tombuctou, lies across the vast Desart, commonly known by the name of ZAHARA, or properly, THE DESART. Geography is at present, very bare of particulars, in this quarter. Ben Alli went from Tombuctou, direct to Fezzan, skirting the South East border of this great Desart. He reckoned only sixty-four days between Tombuctou and Fezzan, which at twelve miles and half per day, produce only eight hundred miles. The interval on the Map is nine hundred and seventy. Reason, however, points out, that the distance from the nearest place, Gallam, ought to be preferred. And as it is understood, that Agadez and Tombuctou are about fifty-five days asunder, it appears yet more probable that the interval between Fezzan and Tombuctou, ought not to be reduced. It must be recollected, that Ben Alli’s Communications were given from memory, after an interval of twenty years. The point of the next importance, is Bornou, the capital of an extensive kingdom situated on the South East of Fezzan, and between the two NEELS or NILES; that of Egypt, and that of the Negros.