THE AEABIAX OR COAST EANGE. 



315 



groups in Southern Egypt gives rise to the transverse chain of the Cataracts, which 

 forms the northern frontier of Nubia proper, and merges near Assuan in the 

 Libyan range. In the syenite and granite formations, here skirted by the rapids, 



Fig. 95. — Density of the Popvlatiox of Egypt. 

 Scale 1 : 6,500,000. 





Inhabitants per Square Mile. 



to 2. -2 to 200. 200 to 1 ."00. 

 « Towns with over 20,000 inhabitants. 

 120 Miles. 



are situated the famous quarries, now abandoned, where the Pharaohs procured 

 the materials for their obelisks, statues, and other huge monolithic blocks. Towards 

 the east the same group of hills, whence springs the chain of the Cataracts, 



