d'anville. 
417 
east and the other west. The lake of Guardia is 
obliterated, and the eastern part of Nigritia de- 
lineated according to the data of Edrisi. 
This reform was followed up by D'Anville, 
who, in 17^5, communicated to the French Aca- 
demy a treatise " On the Rivers in the Interior 
" of Africa/'* Here, instead of the single stream 
of the Niger rolling across nearly the whole 
breadth of Africa, he distinguishes three rivers. 
1st, The Senegal, flowing westward, and falling 
into the ocean, ^d. The Niger, flowing eastward, 
and terminating, as he supposes, at the lake of 
Reghebil in Wangara. Sd, Another river, still 
farther east, and flowing in the opposite direction 
to the Niger. Although I incline to think D'An- 
ville radically correct as to the existence of this 
last river, yet he runs into a manifest error, when 
he makes it at once the Gir of Ptolemy, the river 
of Bornou, and the Nile of the Negroes of Edrisi. 
The last is clearly the same river as the Niger, 
upon which, in fact, he himself has placed all the 
positions which Edrisi placed on the Nile of the 
Negroes. The main point, however, is the se- 
paration of the Senegal and Niger, and the eastern 
course of the latter. Excellent, certainly, must 
have been the information upon which Delisle and 
D'Anville made this construction, since Labat, 
* Academie des Inscriptions, Vol. xxvi. 
vou II. X) d 
