274 REMARKS ON TRAVELS 
stances as the preceding, the estimate of three English 
miles an hour applies to this line of road ; I have therefore 
admitted this with M. Caillie, and I have had the satisfac- 
tion to see that, in forming this line, without any altera- 
tion, upon the distances and bearings as he has given them, 
the latitude of Sego would remain very nearly the same as 
that which results from the observations of Mungo Park, 
made in this vicinity.* But this point remains for future 
examination, when I shall discuss the situation of Tim- 
buctoo. Thus the delineation of this portion of the itine- 
rary has not presented any great difficulties. Some 
topographical circumstances relating to this extent of 
country merit observation. 
Beyond Time the traveller proceeds for two days 
more towards the east ; he then turns to the (magnetic) 
north, and continues afterwards in nearly the same direc- 
tion, which ought to be borne in mind. There are high 
mountains of granite at Timd, and again at four days' 
distance, after which the ground subsides and becomes 
level. The sand is succeeded by a fertile soil, furrowed 
by the frequent streams running westward towards the 
Dhioliba, amongst others the Bagoe, a navigable river, 
and the Couara-ba. Tangrera, near the commencement 
of this line, appears to be a large and very commercial 
town ; this point is placed, according to the journal to 
* Samito the west of Sego, 13« 17' north, second journey of 
Mungo Park, Journal of a Mission, &c. London, 1815, page 149 and 
150. 
