BY A. N. LEWIS, M C. 33 



stretch of more level ground, gouged out a considerable 

 portion of the bed of Lake Nicholls, which is of great 

 depth, and shows us a good example of an over-deepened 

 valley. This glacier flowed south-east for a few hundred 

 yards down the branch of the Russell Falls Creek, and de- 

 posited a considerable quantity of boulder clay below the 

 outlet from the lake. It is impossible to estimate the depth 

 of this moraine, and difficult to determine how far the 

 glacier descended the valley, but probably it did not flow 

 many hundred yards beyond where we now see the shore 

 of Lake Nicholls. 



Another glacier flowing down a gully a little farther 

 to the east was instrumental in forming Lake Rayner. 

 This may have joined the larger Lake Nicholls glacier 

 at a point below both lakes, but this is not certain. It 

 had a smaller snowfield than the other, and probably melt- 

 ed somewhere below the present site of Lake Rayner. The 

 hill below this lake is strewn with glacial debris. Dur- 

 ing one of its halts during the period o^ final retreat, it 

 deposited the moraine that now encircles the lower side 

 of Lake Rayner. 



(c) Beattie's Tarn Area. 



The remaining glacier of this group had its origin im- 

 mediately west of that of the Lake Nicholls glacier, but 

 flowed west of the intervening ridge down towards the 

 Lady Barron Falh? Creek, instead of the Russell Falls 

 Creek. This glacier has left several very prominent, if 

 small, moraines, one of which banks back Beattie's Tarn. 

 On the track to this lakelet one of these moraines is cross- 

 ed. It stands out ten feet above the surrounding country 

 fifty yards from the shore of the tarn, and consists of 

 small boulders almost free from earth. To the left of 

 the track, as you approach the tarn, another very distinct 

 moraine, similarly constructed, stands out unmistakably. 

 This marks the limit of this glacier, which melted at about 

 the same altitude as the I^ake Fenton glacier, a mile farther 

 west. 



These traces of past ice action are clearly discernible 

 to even an untrained observer. They lie not six miles from 

 the railway station, on an excellent track, and can be 

 reached on horseback. An energetic person can here study 

 the vrork of a glacier in the course of a day's trip from 

 Hobart. 



