APPENDIX. 
Iv 
31° 20'. The Con. de Temps has 31° 29'; but it is probable that Suez is 
the best determined of the two places. 
Mr. Bruce had observations of longitude at Kosire and Syene (or As- 
suan). The first he gives at 34^4': and Capt. White at 34° 3'. But as 
Capt. White gives its latitude at 26° 18', whilst Mr. Bruce found it only 
26° 8', we may suppose that the former did not approach the coast near 
enough to discriminate particulars. Mr. Bruce's parallel intersects the 
coast in Capt. White's chart, in Ion. 34° 8' : and I have adopted that for the 
place of Kosire. Capt. White may perhaps have mistaken the old for iiew 
Kosire. 
Syene is given at 33° 30' by Mr. Bruce, making 2° 10' east from Cairo; 
whereas M, D'Anville has no more than 41 minutes of easting. Hence 
arises a difference of 12 degrees in the bearing : M. D'Anville's being 
about N 9 W J Bruce's N 21 W : or nearly parallel to the shore of the 
Red Sea. 
The longitude of Sennar is 33° 30' 30" according to Mr. Bruce. In 
this particular is found the widest difference between D'Anville and Bruce; 
the former placing it no less than 3° 50' more to the west ; that is, D'Anville 
has it, 1° 41' west of Cairo, Bruce 2° 9' east of it. 
In effect, then, the general course of the Nile below Sennar lies to the 
•mst of north, instead of- the contrary, as described in the imperfect mate- 
rials offered to M. D'Anville. For we cannot doubt the general truth of 
Mr. Bruce's geographical positions, although we may not be inchned to 
allow them every point of accuracy. In the observation of longitude at Ko- 
sire, we have seen that he comes very near to Capt. White : and his longitude 
of Cairo, is more exact, or more in harmony with Capt. White's observa- 
tions at Suez, than the longitude recorded in the Con. de Temps. We have 
moreover another observation of longitude taken by Mr. Bruce at the east- 
ern source of the Nile, 36^ 55' 30", (lat. 10° 59'), from whence one route 
leads eastward to the shore of the Red Sea at Masua, another westward to 
Sennar. Admitting his observations to be ever so coarsely made, these routes 
must have afforded so considerable a check, to the distance between Masua 
and Sennar, as to have precluded any very great error, in a difference of Ion- 
