December, 1952 THE SOUTH AUSTRALIAN NATURALIST 
Twenty- three 
the Gawlenan with steel-bush ( Acacia turculensis) and porcupine gross ( Triodia irritam) developed on granite porphyry and in 
the middle ground a formation ot the Sowdenian with the my all (Acacia Sowdcnii) developed on a sandy loam, in this case 
without any development of A triplex and Kochia spp. 
