30 



PRESIDENT S ADDRESS. 



other river of the State. This interesting feature has been 

 described by Mr. T. G. Taylor as the "Cassilis Geocol."* He 





SUBMARINE 

 BUTTRESS 



Fig. 5.— Coast of New South Wales between Jervis Bay and Port 

 Macquai'ie, showing the correapondenc-e between the old, long river and 

 the broader shelf, and the young, short liver and narrower shelf. 



however regarded it as a shifting westwards of the Main 

 Divide. On the hypothesis now put forward it would be con- 



Taylor, These Proceedings, xxxi., 1906, p.518. 



