ELISHA MITCHELL SCIEXTIFIC SOCIETY. 



65 



this upheaval dates the beginning of the history of the 

 riv^ers of this reeion. 



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I C Ckt\yhyitkyy. 



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 •II Ut tion i Q r\ 

 i(/V Loitr Co.rij9mJtrou^ 



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Diagram I gives a rough perspective of this immediate 

 region, together with a vertical section in a north-west and 

 south-easterly direction, just south of Warm Springs. In 

 the vertical section the unbroken lines represent the 

 geological structure of the present topography (heavy 

 line CD) and the dotted lines the same in Permian 

 time. The perspective shows the drainage consequent 

 upon the deformation, and combining the two, it can be 

 seen that the Jackson River flowed down a syncline in a 

 south-westerly direction on a bed of the lower carboniferous 

 rock. Parallel to this, and in a similar syncline on the 



