330 NOTE ON THE GLACIAL PERIOD IN AUSTRALIA. 



NOTE ON THE GLACIAL PERIOD IN AUSTRALIA. 

 By R. von Lendenfeld, Ph.D. 



In the proceedings of the Linnean Society of N.S.W., Vol. X., 

 Part I., I have given a description of the valleys around Mount 

 Kosciusco, and have stated as the result of my examination of 

 those parts, that — (L) The plateau in the central part of the 

 Australian Alps, was glaciated not so very long ago, and since, that 

 part of Australia had obtained its present aspect, down to a height 

 of 5,800,and (2.) No traces of pre-historic glaciers have been observed 

 by me in the Kosciusco Group of Mountains below the height 

 given above. 



Recently I have seen some photograj)hs of glacier polished 

 rocks, which being siluro-devonian, and not granitic as those 

 observed by me on Mount Kosciusco, have retained the strise or 

 sciatches made by the hard stones imbedded in the bottom of the 

 ice stream which once moved over them, very well. 



These rocks are situated in the Mount Lofty Group of Moun- 

 tains near Adelaide, and while their appearance furnishes an 

 additional proof to my statement, that Australia had been subject 

 to glaciation ; it shows at the same time that near the southern 

 coast the glaciers must have descended much further than round 

 Mount Kosciusco, as the height of the lofty mountains barely 

 exceeds 2,000 feet. 



It appears doubtful, however, whether the strife referred to are 

 isochrone with the glacial traces I discovered on Mount Kosciusco. 



