The morass is extremely dangerous to cross without a guide, and two of our party, who were unprovided with one, experienced much difficulty in crossing a small quicksand situated between the marsh and the sea. There is another part of this quicksand, more to the eastward, which it was wholly impossible to cross; our horses, in attempting it, sank up to the saddle-girths, and the severity of the Arab spur alone prevented them from sinking much deeper. We may add that the exhalations which rise from the marsh appear to be very unwholesome, for one of our Arab escort, who slept a short time by the side of it, while we were making some observations, was shortly afterwards seized with violent cold shiverings, and every symptom of fever. At the north-eastern extremity of the morass is the promontory called Tabia Point, on which we found the ruins of what appears to have been a tomb, and at the distance of about a quarter of a mile from the shore may be observed a reef of rocks, which will occasionally afford shelter for boats; the part thus protected is called by the Arabs Marsa Ugrah, from its vicinity to the village of that name. These rocks were above water when visited by Captain Smyth in 1817; but, in consequence, probably, of the prevalence of northerly gales, they were covered when we passed along the coast, and cannot therefore at all times be depended upon for protection. In considering Wad’ el Kháhan as the Cinyphus, which its position with regard to Lebida, and the appearances already pointed out, will very decidedly authorize us to do, one difficulty will be found to arise. It is the impossibility of reconciling the distance from the sea, of the nearest range of hills to the southward, with that assigned by Herodotus to the Hill of the Graces, in which he affirms the Cinyphus to have its source.