XXX 
APPENDIX. 
miles to the eastward of Fort St. Joseph, was lo miles to the westward 
of him. That fort is said to be in 14° 34', or 9 min. north of Joagj so 
that it ought to lie to the north-west, rather than to the west : and accord- 
ingly, there is found, in the map in Labat,* a place named Gaeouva, no 
doubt meant for Joag, on the SE of St. Joseph ; and in point of distance 
answering to it. Other places in the same map of Labat, are also recog- 
nized in the route of Mr. Park j so thdt 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 pbservation 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°f N; which, however, by the 
observations of latitude, is shewn to be E iio|- N (or E by N) making a 
difference of 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 2^^ min. difference of lati- 
tude, 55 of easting, t And hence the latitude of Kooniakarry will be 
14° 48' by account ; but the observation taken at Jumbo, in its neigh- 
bourhood, giving only 14° 34', the account is 14 to the north ; equal to/ 
about a point and quarter in bearing. The same mode of correction has 
* In Vol. iv. p. 92. 
G. 
Hours 
miles 
Bearings by 
Lat. by 
direct. 
compass. 
observ. 
Country. 
t Joag to 1^ 
7 
18 
E by N 
14° 25' 1 
Kajaaga 
Sammee J 
Kayee - - 
3i 
9 
Ditto 
1 
Teesee 
7i 
18 
NE byN 
I 
Medina 
12 
SE by E 
Kasson 
Jumbo - 
12 
Ditto 
Kooniakarry 
3 
E by S 
