Ill 
APPENDIX. 
authorities, together with an outline of the construction. To enter into a 
detail of both, would require a volume: I shall therefore barely specify the 
authorities for the sea coasts, and for such parts of the interior as have been 
aforetimes described by geographers; and confine the detail to modern 
discoveries, and to such parts, as those discoveries have helped to improve : 
and more especially to the points which determine the courses of the Niger 
and Nile. 
The western and southern coasts, from the Strait of Gibraltar to the 
Equator, have been newly constructed for the present purpose. M. Fleu- 
rieu's authorities have been followed in respect of Cape Verd, Cape Blanco, 
and the Canary Islands. The coasts of Morocco and Fez, rest on the au- 
thority of Don Torino's charts, in the Spanish atlas : and between Morocco 
and Cape Blanco, various authorities have been admitted, in the different 
parts: as it appeared to me, that M. Fleurieu had not rightly conceived the 
position of Cape Bajador. 
The coasts On the south and east of Cape Verd, are drawn in conformity 
to the ideas of Captain Price. This gentleman, in the Royal Charlotte East 
India ship in 1793, had an opportunity of adjusting the longitudes of some 
important points; which longitudes Mr. Dalrymple applied to the correction 
of the existing charts of the coast, and with his accustomed liberality and 
zeal for the improvement of science, permitted me to avail myself of the 
use of these corrections, previous to his own publication of them, in a dif- 
ferent form. It is to the same invaluable Journal of Capt. Price, that I am 
indebted for some of the most important notices respecting the variation of 
the compass, along the coast of Guinea, &c. ; and without which notices, 
the approximation of the quantity of variation in the interior of Africa, could 
not have been accomplished. (See above, p. xxvi.) 
The result is, that the coast of Guinea has several degrees more of extent 
from east to west ; and that the breadth of South Africa at the Equator, is 
less, than M. D'Anville had supposed. 
No alteration has been made in the coasts within the Mediterranean, 
save in the form and position of the Gulf of Alexandretta, and the adjacent 
coasts. 
