CANNON 



PLATE 29 





Fig. 66. Characteristic vegetation on the north slope of the Djebel Bou Rhezal, Biskra. 

 Haloxylon scoparium is a prominent species. 



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Fig. 67. North base of Ed Delouatt hills, west of Biskra, showing the low-facing dunes. 

 To the right is a glimpse of an oued which pierces the hills in the middle distance. 



