Entrance of the Syrtis — Extensive Lake, or Marsh, described by Strabo — Remarks of Strabo compared with the actual appearance and extent of the Marsh — Remains considered as those of the ancient Naval Station, described by Strabo, at the Mouth of the Lake — Appearance of another Station more to the northward — Gulf of Zuca — Remarks of Signor Della Cella connected with it — Resemblance of the names Zuchis and Zuca — Non-existence of the Gulf of Zuca in the Greater Syrtis — Error of D’Anville and modern Geographers on this point — Remarks of Signor Della Cella on the terms _Marsh_ and _Lake_, as applied to the body of water mentioned by Strabo — Dimensions of the existing Marsh — Alleged danger of crossing it — Insulated spots in several parts of the Marsh, corresponding with the accounts of Strabo — Arrival at Sooleb — Appearance of Pasturage in this neighbourhood — Liberality of Shekh Mahommed — Cause of it ascertained — Sooleb occupies the place assigned in modern charts to the Gulf of Zuca — Continuance of the Marsh — Remains near Mahada called Kusser el Jébbah — Story connected with them related by the Dúbbah — Unwillingness of our Arab Guides to cross the Marsh — Cause of this ascertained — Narrow escape of two of our party — Nature of the soil in this neighbourhood — French Inscription left by the boats of the Chevrette — Another left by the barge of the Adventure — Arrive at Mahàd Hassàn, probably the Turris Hassàn of Edrisi — Remains at Mahàd Hassàn — Arrive at Giraff, where the Marsh terminates altogether — Refractory conduct of our Camel-drivers — Improvement in the appearance of the country — Arrival at Zaffràn — Grateful verdure of its Pasturage — Remains at Zaffràn considered as those of Aspis — Their nature and appearance described — Port called Mersa Zaffràn considered as that of Aspis — Difficulties attending this position — Remains on the Beach — Supposed Date of the Buildings at Zaffràn — Remarks connected with them — Castles mentioned by Leo Africanus — Construction of the Forts at Zaffràn.