46 PROF. J. W. GREGORY ON THE [Feb. I904, 



which I found exquisitely glaciated. In the railway-cutting by Gor- 

 manston Station is an erratic of fossiliferous limestone, measuring 

 4^ feet in length by 3.^ in width and 2| in height ; it is scratched 

 all over, and partly polished. 



The Linda moraine rises to the height of about 1200 feet above 

 the sea, and on the floor by the Linda Valley, near the slaughter- 

 yards, it is at the level of only 900 feet. A bore of the King Lyell 

 Mine is said to have pierced the same deposits to a depth of 

 280 feet, and would thus show that they occur at an altitude of not 

 more than 700 feet above sea-level. 



That the moraine formerly extended right across the Linda 

 Valley is shown by the occurrence of a strip of glacial deposits on 

 the northern bank of that valley, immediately above the river. 

 But the northern side of the valley is so steep, and the Linda is 

 there so near to the southern foot of Mount Lyell, that but little of 

 the glacial deposits remain in situ. There can, however, be no 

 doubt that the moraine once formed a dam across the Linda Valley 

 from north to south, that it was cut through by the Linda River, 

 and that its summit has been planed down to the level of the 

 Gormanston Gap. 



East of the moraine the floor of the Linda Valley is a level, 

 alluvial plain, in places half a mile wide ; the glacial deposits 

 can be found rising from the alluvium, on both sides, until, a little 

 over a mile to the east of the moraine, the valley narrows, owing 

 to the projection of the steep north-eastern spur of Mount Owen. 

 Patches of the glacial deposits can be found at intervals along the 

 edge of the alluvial flats on the southern side of the river. More 

 of the material occurs on the northern side of the valley, which is 

 rough and densely timbered ; a railway-line for mining purposes 

 has recently been made round the eastern end of Mount Lyell, from 

 the Linda township to the valley between Mount Lyell and Mount 

 Sedgwick. This railway crosses the eastern spur of Mount Lyell 

 at the height of about 1500 feet. The glacial deposits are exposed 

 at intervals in the railway-cutting, and they are especial^ well 

 developed in the King Valley, and along the northern foot, of Mount 

 Lyell, at the eastern end of the Sedgwick Valley. 



The North Lyell Railway shows a good section of the glacial 

 deposits, in the bluff above the junction of the King River and the 

 Linda. The railway-line has cut through an enormous boulder of 

 black, fossiliferous, Carboniferous Limestone. The two ends of the 

 boulder are exposed on the banks on each side of the line, and it 

 must have been at least 16 feet long. 



The King River flows through a broad valley, and its floor is an 

 alluvial, forest-covered plain, over a mile in width. The eastern 

 end of Mount Lyell overhangs the valley. Mount Lyell itself is a 

 long east-and-west ridge, which separates the Linda Valley from a 

 much larger and broader valley to the north, between it and Mount 

 Sedgwick. The railway-cutting round the eastern end of Mount 



