392 Geology of 



slopes of Aimer's Head large morainic accumulations have been 

 preserved. There is also ample evidence to show that during its 

 greatest extension the Bakaia and "Waimakariri glaciers joined by the 

 pass, on the summit of which Lake Lyndon is now situated. In the 

 Historical ZNTotes of the surrey I have already alluded to some of the 

 characteristic features, as showing such abundant signs of the effects 

 produced by the enormous glaciers of the district, so that I need not 

 dwell further upon it. 



The Cltttha G-eaceee. 

 Looking at the size and form of Lakes "Wanaka and Hawea, both 

 surrounded by morainic circumvallations of no mean size, and con- 

 sidering the physical features of the Clutha valley, ample evidence is 

 offered to us that an enormous glacier, to the former termination of" 

 which my travels have not extended, must have descended by this 

 valley. It is however evident that this glacier, one of the largest in 

 New Zealand, reached much beyond the mouth of the Lindis, and 

 received a further accession by the Kawarau Yalley from the Lake 

 Wakatipu glacier, the main branch of which descended by the valley 

 of the Mataura. The length of even that part of the Clutha glacier 

 from its beginning at the head of the Lake Hawea valley to the 

 junction of the Lindis is 6S miles. The immense morainic accumu- 

 lations near the sea-coast, north of the mouth of the Taieri river 

 (Otago), described by Professor Hutton in his " Beport on the 

 Geology of Otago/' page 62, might be the frontal moraine of this 

 glacier. 



(B) AVesteex Seopes oe Soetheex Aeps. 



In several portions of this Beport I have already given some 

 account of the most striking characteristic features displayed by the 

 deposits of the Ice-age along the western slopes of the central chain. 

 Whilst the remains of the most northerly moraines in Westland 

 belonging to the old Taramakau and Arahura glaciers, consisting of a 

 large circumvallation around the lower end of Lake Brunner (227 

 feet), and a smaller one in the valley of the Arahura, do not reach the 

 sea within twelve miles, the next ones belonging to the great Hokitika 

 glacier are separated from the sea-shore by a small strip of low land 

 of recent littoral origin only. The next large moraine belonging to 

 the IMikonui-TTaitaha glacier forms already a very conspicuous object 



