viii THE TANGANYIKA PROBLEM. 



o-anyika problem thus lends itself to the formation of a connected 

 story, and I can point out to the general reader, who may be 

 attracted to the puzzle as he would be to a cock-fight, that he 

 need not be alarmed at technicalities to follow, these having been 

 intentionally rendered conspicuous for omission in small type. 

 Moreover to those who know Africa, I think it may be positively 

 refreshing to find that the interior has actually got some attributes 

 besides a continued absence of gold, and a total unsuitability for 

 European colonization. Further, since the present volume contains 

 the only general, illustrated account of the animals found in the 

 great lakes, it is hoped that it may be really of use to numbers of 

 people, who in spite of attributes, still go out to the African 

 interior, but who up to the present time have had no means of 

 ascertaining the nature of the sometimes extremely good fishes 

 they are continually eating. 



Of the manner in which the second Tanganyika expedition was 

 organised, and of the method of treating the Tanganyika problem 

 which I have adopted in the present volume, it is not necessary to 

 speak. I have already dealt with these matters in the intro- 

 ductory chapters ; but I may point out that I have intentionally 

 introduced as many illustrations and photographs of the localities 

 described as possible, since it seems to me that no one can form 

 any clear idea of the physical characters of an extensive area from 

 maps and descriptions alone. So again, in chapter six, I have 

 re-introduced matter relating to the formation of Park lands upon 

 alluvial fiats, which I had already published in a former work ; 

 while lastly, owing to a misapprehension under which Sir Harry 

 Johnston labours with respect to the relation of his own to other 

 explorations in the Mountains of the Moon, I have had to refer 

 to this range at greater length than I originally intended ; but I 

 do not wish it to be understood that I undervalue Sir Harry's work 

 in this direction ; on the contrary, I think it distinctly interesting 

 and valuable, since, although he did not reach as high an altitude 

 as myself, in all major points he has completely confirmed the 

 results which I had previously attained. 



October, 1902, 

 London. 



