CHAPTER III. 
GENERAL VIEW OF THE NATURAL HISTORY OF 
AFRICA.* 
Mineralogy. 
Primitive Roch — Secondary Roclcs. — Volcanic Rocks, — Alluvial 
Rocks. — Simple Minerals found in Africa, 
Zoology. 
Mammalia, — Birds, — Reptiles, — Insects, — Zoophytes, 
In endeavouring to exhibit a general view of the 
Natural History of Africa, it may be proper to 
begin with its 
MlNERALOGT. 
The minerals of this great continent are very 
imperfectly known, and the geognostical relations 
of its rocks have hitherto engaged the attention of 
but few observers. The facts we shall now state 
are given by travellers in the accounts of their 
journeys, but are in general much less satisfactory 
than the present state of mineralogical science 
demands. 
* I am happy in being able to state, that I am indebted 
for this chapter to my friend Mr Jameson, the very eminent 
Professor of Natural History in the University of Edinburgh, 
and well known to the learned world by his excellent works 
on Geology and Mineralogy. 
