APPENDIX. 
issuing out of the lake Dibbie; and which, together with the southern 
branch from the same lake, forms an island, reported to be 90 or 100 miles 
in length, named Jinbala by Mr. Park. There is a town on the side of the 
•northern branch, also named Jinbala; but whether the island may take its 
name from this town, or from the river, whose proper name, from about this 
point, seems to be Guin, or Jin, I know not. M. D'Anville has described, 
in this position, the country of Guinbala, subject to Tonka Quata : the 
same who is said by Labat to be sovereign of the country which contains 
the lake of Maberia, and the river of Guien.* 
Here, then, we have an explication of the error of those, who, from the 
supposed information of the Mandinga merchants, supposed the lake Ma- 
beria (answering to the Dibbie of Park), to form the source of the Senegal 
river; and who took the river of Guin, or Jinbala, for a distinct river, in- 
stead of a branch, issuing from that lake. The Mandingas might very 
truly have informed the French settlers, that the lake Maberia, and the 
rivers Joliba and Guin would convey them to Tombuctoo; but did they 
say also, that the river of Senegal would convey them to the lake Maberia ? 
The French merchants, perhaps, taking for granted that the navigation 
was continuous, might never inquire whether their informants were speak- 
ing of one or of two rivers: and the others might at the same time be 
speaking of two distinct rivers, and be ignorant of the prepossessions of their 
inquirers ! 
It may be added, that, whether from the difficulties that grew out of the 
subject, when the geographical documents came to be analyzed, or whether 
it was from actual information, both Delisle and D'Anville describe two 
lakes, near each other; one at the supposed head of the Senegal river, the 
other at that of the Tombuctoo river. I think it most probable, that it 
was occasioned by the want of their being made to comprehend, that the 
waters ran eastward to, and not westward from the lake Maberia; so that 
when they were told that the Tombuctoo river issued from a lake, they 
concluded it must be a different one from that at the head of the Senegal, 
* Labat, Vol. ii~ p. 161. 163. and iii. p. 361. 
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