CANNON 



PLATE 19 



W^ 



Fig. 43. Retama retam, in dunes about 58km. from Gharda 





r- »• . - *.-- x -..--. . -^ 



"... --.- » i " „" .- .. 



Fig. 44. Dates at the bordj Zolfana, about 58km. from Ghardaia. One of two wells encountered 



between Ghardaia and Ouargla. 



Fig. 45. Ghardaia to Ouargla. View overlooking flood-plain of the Oued M'Zab, or a tributary 

 of this oued. The adjacent upland is apparently without plant life. 



