| Published as the Act directs, 1st Decr, 1819, by John Murray Albemarle Street London. | J. Walker Sculpt. |
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This Map has been constructed solely from the Journals of Mr. Burckhardt in the parts above Ibrim, below Seboua the bearings of the windings of the River as taken by Messrs. Legh and Smelt were of some assistance. The Latitude and Longitude of Syene and Philæ are certain, having been observed by the French Astronomer Nouet; for the rest we are guided solely by bearings and distances: future travellers therefore will contribute easily and essentially to the correction of this part of African Geography, by a few observations of Latitude on the parts of the Nile here delineated.
W. M. Leake.
It may be inferred from the account which Herodotus has given of the Island Tachompso, the lake near it &c. that the Greeks had very little correct information regarding the country above Syene, for no such island or lake now exists, nor is there any appearance or probability of its having ever existed.
The Greek Inscription on the temple of Debod copied by Messrs. Hamilton and Leake in 1802 and another at Dakke, are the only ones so old as the time of the Ptolemies: all the others are of the Roman Empire & some of Christian Times.
The following are the names and distances of the anct. places above Philæ, as given in the Itinerary of Antoninus:
| M. P. | ||
| From | Contra Syene to Parembole | 16 |
| Tzitzi | 2 | |
| Taphis | 14 | |
| Talmis | 8 | |
| Tutzis | 20 | |
| Pselcis | 12 | |
| Corti | 4 | |
| Hyero-Sycaminon | 4 |
The modern names Tafa and Korti and the relative distances of the principal ruins leave little doubt of the Site of all the above places. The entire District was called Dodecaschœnus by the Greeks and Romans on account of its length. Making use of the Thebaic Schœne of 60 Stades (Strabo L. 17. p. 804.) and taking the English Mile at 8½ Stades, twelve Schœnes will be found to correspond very accurately with the actual distance from Assouan to Maharraka measured along the stream.
The first accurate knowledge of the country beyond the Dodecaschœnus seems to have been obtained by the military expedition commanded by Petronius in the reign of Augustus.