I shall next proceed to offer some geographical, and other, remarks, on certain of the subjects that present themselves in and about the line of Mr. Horneman’s route; as, 1. The _Bahr-bela-ma_, and _Valley of Mogara_. 2. _Siwah_. 3. The _Lesser Oasis_. 4. The _Valleys_ of _Schiacha_ and _Gegabib_. 5. _Augila_. 6. The _Harutsch_. 7. _Fezzan_ and _Gadamis_. I. _The Bahr-bela-ma, and Valley of Mogara._ The term _Bahr_ is well known to signify (in Arabic) an expanse of water, whether _sea_, _lake_, or _river_: and _Bahr-bela-ma_, a hollow space that is supposed to have contained them: in other words, the sea, lake, or river, _without water_. In its application to the present subject, it has been understood by some great authorities, to be the ancient bed of a river; and that river, the Nile of Egypt; which they suppose to have quitted its present course, at Benjusef, and, passing through the province of Faiume, and the lake Kairun, entered the sea at the Gulf of the Arabs. Having already given an opinion on this subject, I shall say no more concerning it in this place, than that it is by no means weakened by any thing that has appeared since: that opinion was, “that in _ancient times_ the bed of the Nile lay lower than the province of Faiume:” and it is certain, that the gap, or outlet at Sakkara, is _still_ above the level of the Nile. Mr. Horneman’s observations, added to those of General Andreossy, and of Mr. Browne, throw some further light on the course of the _hollow_ bed, or channel in question. It appears that the General, as well as Mr. Browne,[27] came to the Natron Valley at about 32 G. miles to the westward of Terané: and that the General also found, adjacent to it, on the west, separated only by a narrow ridge, a second and larger valley, which the Arabs name _Bahr-bela-ma_; and also _Bahr-el-farigh_, which signifies the _empty_ river. These he found to run parallel to each other, in a direction of about NNW ½ W and SSE ½ E, for about 30 miles; and without any appearance of termination, either way. The Natron Valley, he reckons 2½ French leagues, or about 6½ G. miles, in breadth; the other, 3 leagues, or 7¾ such miles; or, both together, from one extreme to the other, more than 14¼. See the _Mémoires_, p. 239, 240, and also the map.