viii PREFACE. 
require to prepare an account in detail, as it now appears ; 
and being desirous of gratifying, as speedily as possible, the 
curiosity which many of the members were pleased to express 
concerning my discoveries, determined that an epitome, or 
abridgment of my travels, should be forthwith prepared from 
such materials and oral communications as I could furnish, and 
printed for the use of the Association ; and also, that an engraved 
Map of my route should accompany it. A memoir, thus supplied 
and improved, was accordingly drawn up in two parts, by 
Members of the Association, and distributed among the Society : 
the first part consisting of a narrative, in abstract, of my travels, 
by Bryan Edwards, Esq. ; the second, of Geographical Illustra- 
tions of my progress, by Major James Rennell, F. R. S. Major 
Rennell was pleased also to add, not only a Map of my route, 
constructed in conformity to my own observations and sketches 
(when freed from those errors, which the Major's superior 
knowledge, and distinguished accuracy in geographical re- 
searches, enabled him to discover and correct), but also a General 
Map, shewing the progress of discovery, and improvement in 
the Geography of North Africa ; together with a Chart of the 
Royal Society ; Andrew Stuart, Esq. and Bryan Edwards, Esq. F. R. S. Con- 
cerning the original institution of the Society itself, and the progress of dis- 
covery, previous to my expedition, the fullest information has already been given 
in the various publications which the Society have caused to be made. 
