BY JAMES STIRLING, F.G.S., F.L.S. 487 



evidences in favour of a glacial period in South Australia. The 

 objections by Mr. Scoullar, Cor. Mem., as to the origin of the 

 glaciated surfaces near Adelaide, viz., that they were caused 

 " by the attrition of blown sand," are also controverted. I have 

 seen some photographs of these glaciated surfaces, (sent to me for 

 inspection by Prof. Tate) and they resemble very strongly the 

 glaciated surfaces on Mts. Cobboras and Bogong, to be herein- 

 after referred to. Dr. von Lendenfeld has also seen some 

 photographs of polished rocks from South Australia, and 

 has no doubt as to the glacier origin of the polishing, (1) 

 although he doubts whether the striae referred to are isochrone 

 with the glacial traces he discovered on Mt. Kosciusco. In con- 

 sequence of a very interesting correspondence on the subject of 

 glacier evidences between Dr. von Lendenfeld and myself, it was 

 arranged that we should make a joint trip to the highest mountain 

 in Victoria, Mt. Bogong, and if time and circumstances per- 

 mitted, explore the Bogong High Plains to the south, and pro- 

 ceed thence along the main dividing range towards Mt. Kosciusco, 

 so that his extensive European Alpine experience and my local 

 geological knowledge might be utilized, and the features discussed 

 on the ground. On the 3rd January, 1886, we met at Snowy Creek 

 junction and tributary of the Mitta, and on the following three days 

 made the ascent of Mt. Bogong from the north, an arduous journey 

 but still of great interest. Dr. von Lendenfeld has already described 

 our journey in the publications of the Mining Department of 

 Victoria (Mining Registrar's Returns for Quarter ended March), 

 so that it is unnecessary for me to repeat the narrative. Suffice it 

 to say that the evidences of glaciation discovered by us are — 



1. Erratics in the Reewa River and Snowy Creek Valleys. 



2. Blocs perches and smoothed surfaces on Mt. Bogong. 



3. Moraines at base of Mt. Bogong, Mountain Creek in 

 Reewa River Valley. 



The first named are very abundant in the Pleistocene drifts at 

 Snowy Creek, consisting of huge basaltic boulders, etc., in linear 



(1) E. von Lendenfeld. Note on the Glacial Period in Australia. Proc. 

 Linn. Soc. N.S.W., Vol. X., p. 330. 



