NEW AND IMPORTANT WORK. 
In i vol. , royal 4to, containing numerous Illustrations in Colour, and in 
Black and White, from Drawings and Photographs by the Author 
and others. Several Maps, Diagrams, & c., Price 25s. net. 
THE THNGHNYIKH 
PROBLEM. 
An Account of the Researches undertaken concerning the Existence 
of Marine Animals in Central Africa. By J. E. S. Moore, 
F.R.G.S., Author of “To the Mountains of the Moon,” See. 
This new and important work upon African Exploration contains 
the first account of the investigations which were undertaken during the 
Tanganyika Expedition, concerning the existence of jelly fishes and other 
marine animals in Lake Tanganyika. It is in fact the first definite 
account of the Zoology and the Geology of the Great Lake Region of 
Africa, and of the extraordinary chain of evidence which has led to the 
belief that Tanganyika represents the old Jurassic Sea. 
The present work contains the only illustrated description of the 
fishes and other animals which inhabit the Great African Lakes. 
LONDON: HURST AND BLACKETT, LIMITED. ' 
