^•ii'.-^ 



■£ii,mi^^^h 



A. \"ie\v luoking iiuith from O'Halloran's Mount, Oodnadatta, showing luwur plaiii, wuh upper 



plain at extreme right in background. 



B. Lower plain near Oodnadatta, showing "gibbers" on the surfac3 and typical depression, with 



species of Eremophila. 



