320 E. C. ANDREWS. 



insignificant in size and were rapidly dissipated. The 

 Snowy Valley however presented a gentle fall to the ice 

 cap and was occupied by a long valley glacier. 1 In this 

 now deglaciated Snowy Valley are abundant evidences of 

 the facetting of spurs. 



Now the characteristic forms which exist on the deglaci- 

 ated plateau of Kosciusko to-day are in striking contrast 

 to those to be found on the non-glaciated plateau remnants 

 to the immediate south, west and east, and which were at 

 one time part of the Kosciusko peneplain. They are in 

 striking contrast also to those forms which characterise 

 the V-shaped gorges trenching the upland. On Kosciusko 

 we Uave Alpine rock basins, hanging valleys, facetted 

 spurs, an abundance of typical cirques and smoothly swept 

 cols. Such features are however characteristically absent 

 from the associated and once continuous but non-glaciated 

 topographies. In this locality it is clear that we have two 

 topographies which were similar even in recent times, but 

 Kosciusko has been lately modified so as to differ from 

 the associated topographies. In addition to this we know 

 that the Kosciusko plateau has been visited by an ice sheet ; 

 we know also that its rock basins and facetted spurs 

 occur in just such places as we would expect from a con- 

 sideration of the principles stated in Part I of this Series, 

 if we assume that glaciers can corrade rock structures. 

 Moreover, from a comparison with the slightly less 

 elevated but non-glaciated portions of the same peneplain, 

 we know that the Kosciusko Plateau did not possess these 

 cirques and allied forms prior to its glaciation. It seems 

 reasonable to conclude therefore that the cirques, the 

 facetted spurs, and the rock basins of Kosciusko are those 

 which have been formed by ice corrasion. 



1 David, T. W. E., pp. 663, 664. 



