which is only 900 feet above sea level a few miles away. 

 The Tumut gorge near Yarrangobilly exceeds 3,000 feet in 

 depth. Similarly for the New Unglarid, the North Queens- 

 land, the Darling Downs and the Victorian districts. The 

 depths of these canons are a measure of the amount of 

 uplift of the land since the leads were formed. Had modern 

 physiographical methods been known to such men as von 

 Mueller and Murray they would have solved the problem of 

 the Pliocene and Pleistocene history of eastern Australia 

 easily, instead oi being bewildered by the evidence. 



To return to the main discussion it may be noted that 

 the leads distinctly point to a rapid period of subsidence 



■ channel base < 



there, instead of being dragg 

 protects it. That is to say 

 channel there w ith debris in 

 deeper. This is what happen* 

 during the formation of thesi 

 been moderately elevated, < 

 excavated in its surface as 

 channels and the nature of tin 

 then set in with the gradual 



