XXX 
APPENDIX. 
to the eastward of Fort St. Joseph, was 10 miles to the westward of him. 
That fort is said to be in 14 0 34', or 9 min. north of Joag ; so that it ought 
to lie to the north-west, rather than to the west: and accordingly, there is 
found, in the map in Labat,* a place named Gacouva, no doubt meant for 
}oag, on the SE of St. Joseph ; and in point of distance answering to it. 
Other places in the same map of Labat, are also recognized in the route of 
Mr. Park ; so that the connection between it and the French settlement on 
the Senegal, is very clearly made out; which is a circumstance of some 
importance in this geography. 
It will appear that the reckoning kept by Mr. Park gave 89 min. diffe- 
rence of latitude between Pisania and Joag, whilst the observation gave 50 
only. About 9 minutes may be placed to the account of excess of distance, 
and 30 will then remain, on the whole distance of 253 geographic miles. 
In other words, the dead reckoning, corrected by allowing 17 degrees of 
westerly variation, gave a course of E 20°— N ; which, however, by the 
observations of latitude, is shewn to be E 1 N (or E by N) making a 
difference of 9^ degrees. But this I regard as coming very near, consi- 
dering the circumstances under which the reckoning was kept. 
From Joag we accompany Mr. Park to Kooniakarry and Jarra. The 
reckoning between the two first gives about 23^ min. difference of lati- 
tude 55 of easting.f And hence the latitude of Kooniakarry will be 
14 0 48' by account; but the observation taken at Jumbo, in its neigh- 
bourhood, giving only 14 0 34', the account is 14 to the north; equal to 
about a point and a quarter in bearing. The same mode of correction has 
iv. p. 92. 
Hours. 
G. 
miles 
direct. 
Bearings by 
compass. 
Lat. by 
observ. 
Country. 
t Joag to "J 
Sammee J 
Kayee - - 
Teesee 
Medina - 
Jumbo 
Kooniakarry 
7 
31 
71 
18 
9 
18 
12 
12 
3 
E by N 
Ditto 
NE byN 
SE by E 
Ditto 
E by S 
i4°2 5 '| 
> 
14° 34' J 
Kajaaga 
Kasson 
