488 EVIDENCES OF GLACIATION IN THE AUSTRALIAN ALPS. 



extension for miles, as at Granite Flat — the nearest basaltic outliers 

 being fully 20 miles distant on Bogong High Plains, etc. 



The second or what I have called blocs perches are large, semi- 

 rounded or sub-angular masses of igneous or rather plutonic rock 

 — hornblende porphyrites — occupying the crests of spurs and 

 sidelings in a regular descending series from near the summit of 

 Mt. Bogong 6,508 feet, towards the Reewa Valley, many of 

 them resting upon smoothed surfaces of pegmatite at lower levels. 

 (Mt. Bogong is gnessic.) 



The last named are huge masses of angular and sub-angular 

 rocks at the base of Mt. Bogong, pronounced by Dr. von Lendenfeld 

 to be undoubted moraines (at an elevation of 1,000 feet above sea 

 level). I may remark that these masses are too extensive and 

 distant from the steep spurs of Mt. Bogong to be considered as 

 takes ; besides which they show evidences of translocation. 



I do not purpose entering into a description of further evidences 

 discovered by myself in the Mitta Mitta Valley, at Lake Omeo, 

 or Benambia Creek, etc, in the present paper. There will in due course 

 be communicated a second article on the evidences of glaciation in 

 the Australian Alps, together with a reply to later criticisms. I 

 merely desire to show that the evidences discovered on Mt. 

 Kosciusco by Dr. von Lendenfeld are by no means isolated, and 

 that the highest mountain in Victoria, Mt. Bogong, presents 

 features which confirm the evidences of glaciation elsewhere, and 

 that there is no a priori impossibility of the area of glaciation being 

 more extensive than has been assumed. In conclusion, I would 

 add that taking into consideration the facts supplied to us by the 

 examination of the ancient flora and fauna of Australia as con- 

 tained in the writings of Prof. Tate of South Australia and of Mr. 

 Wilkinson, F.G-.S., of New South Wales, and the geological 

 evidences of glaciation over widespread areas daily accumulating, it 

 is difficult indeed to resist the conviction that Southern Australia, 

 as well as South America and Southern Africa, and indeed New 

 Zealand, all participated in a period of refrigeration, culminating in 

 an ice-clad region during later Pliocene or Pleistocene times, not- 

 withstanding that many difficulties suggest themselves in endeavour- 

 ing to work out the problem from mere localized observations. 



