4 NOETH-EAST AFEICA. 



Pacific Oceans from the Cape of Good Hope to Cape Horn, and forming a vast 

 semicircle of 24,000 miles, equal to the circumference of the globe. 



Although not yet thoroughly explored, Africa is already sufficiently known at 

 least in the main features of its general relief. More compact and less indented 

 than the other divisions of the globe, it also remains less accessible through the 



Fig. 1. — Highlands and Plateaux of Central Afkica. 

 Scale 1 : 20 000. 000. 



KHARTU 



L . 01 (jreenwi ch 



300 Mfles. 



work of erosion. Its mean elevation exceeds that of Europe and Asia, although 

 there are scarcely any mountains equal to the Alps and Caucasus, none comparable 

 to the Himalayas. Considered as a solid mass with vertical scarps and horizontal 

 surface, its altitude, according to Chevanne, is at least 1,900, possibly 2,200, feet. 

 An oblique line drawn from Loanda on the Atlantic to a point on the Red Sea 

 between Suakin and Massa wah marks off a region which forms an almost continuous 



