APPEND I X. 
xxiii 
of Fort St. Joseph, near to which he passed; as they differ from the maps 
in present use. And, as some positions in the journey of Mess. Watt and 
Winterbottom, serve very much to aid the improvement of the geography, 
it will be proper to speak of them also. 
Cape Verd, and Fort St. Louis, at the mouth of the Senegal river, are 
placed according to the observations and results of M. Fleurieu.* 
Jillifrey, on the Gambia river is, from the mean of the longitudes set 
forth by D'Anville, D'Apres, and Woodville, and which do not differ 
amongst themselves,, more than 4^ minutes. t 
The detail of the coasts, as well as the lower parts of the rivers between 
Cape Verd, and Cape Verga, are also from the charts of M. Woodville. That 
part between Cape Verd and latitude 18 0 , is adjusted to M. Fleurieu's re- 
sult of longitude, whilst the particulars are from D'Anville and Woodville. 
The course of the Rio Grande from the sea to the -break near the river 
Dunso, is from Dr. Wadstrom's map. The Dunso river, crossed by Mr. 
Watt, appears evidently to be a continuation of the same river; several 
branches of which flow from the south-east. And the high tract of moun- 
tainous land beyond it, is no doubt a branch of the great ridge above com- 
memorated, under the name of Komri, in the work of Abulfeda. 
The route of Mr. Watt is described from a sketch communicated by 
the late Mr. Beaufoy, J in which the scale appears, on a reference to the 
original journal, to be intended for British miles. I have regarded them 
• That is, Cape Verd in latitude 14° 48', longitude 17 0 34' west of Greenwich : St. 
Louis in latitude 16 0 5' (by D'Anville), longitude 16 0 % by Fleurieu. 
t D'Anville 16 0 9' 3 c" ] 
D'Apres 165 o \ Mean, 16 0 ~j' 
Woodville 16 8 3 J 
Latitude 13° 16'. 
J The public cannot but recollect the obligations due to this gentleman, on the score 
of his persevering industry, and laudable zeal, in the work of extending our knowledge 
of the interior parts of Africa. Accordingly his loss to society, in this department, is 
likely to be felt for some time, if not for ever : the researches in Africa being a path of 
his own choosing ; a path which, more than any other person, he had contributed to 
open, and to render smooth ; and in which he seemed destined to succeed ! 
