290 PEOF. T. W. EDGEWORTH DAVID ON [May 1 896, 



of for about 35 years, and Australian geologists have not yet had an 

 opportunity of confirming them ; but the subsequent discoveries 

 iu this neighbourhood by Prof. Ralph Tate, of Adelaide University, 

 leave no doubt as to their accuracy. 



In 1860 the Rev. W. B. Clarke l recorded the existence of a few 

 * blocs perches ' in the Australian Alps. 



In 1866 Sir Richard Daintree 2 recorded evidences of ice-action 

 in the districts of Bacchus Marsh and Ballan, in Victoria, in these 

 words : — ' Here [on the Lerderberg River, Bacchus Marsh, Vic- 

 toria] I have found a few pebbles grooved in the manner I have 

 read of as caused by glacial action/ 



This observation has been confirmed by several geological workers, 

 including the present author ; and glaciated boulders from near this 

 locality were exhibited at the meeting when this paper was read. 



In 1877 Prof. Ralph Tate 3 discovered a glaciated rock-pavement 

 capped by glacial beds at Hallett's Cove, near Adelaide, and on 

 May 7th of that year he recorded his discovery in a course of public 

 lectures. The glaciated rock-pavement is described as being of 

 Archaean age and as forming the summit of the sea- cliffs for a dis- 

 tance of about a mile in a N. and S. direction, with a width of a 

 few yards, and as terminating inland against a low mural escarpment 

 of Miocene limestone. Recent observations by Mr. A. W. How- 

 chin, Prof. Ralph Tate, and the author, show that this pavement 

 extends for at least J mile under the Miocene limestone. The 

 glacial beds which intervene between the pavement and the Miocene 

 limestone are stated to contain blocks of rock derived from an area 

 about 35 miles to the south. The pavement is described as being 

 smoothed and striated in a north-and-south direction, and as 

 showing evidence that the ice which caused the striation came 

 from the south. 



In 1879 Mr. R. L. Jack 4 recorded his discovery of blocks of 

 granite, slate, etc., contemporaneously embedded in strata of Permo- 

 Carboniferous age, in the Bowen River Coalfield, Queensland. The 

 presence of these blocks is attributed by Mr. Jack to the action 

 of floating ice. 



In 1879 the late Mr. C. S. Wilkinson 5 recorded what he con- 

 sidered to be evidence of glacial action in the Triassic Hawkesbury 

 Series of New South Wales. This evidence consists of disrupted 

 masses of clay-shale, of all sizes up to 20 feet in diameter, embedded 

 in sandstone. 



1 'Besearches in the Southern Goldfields of New South Wales/ Sydney, 

 1860, p. 225. 



2 Geological Survey of Victoria. ' Eeport on the Geology of the District of 

 Ballan, including Eemarks on the Age and Origin of Gold, etc.' By Bichard 

 Daintree. Melbourne, 1866. 



3 See Bep. Austr. Assoc. Adv. Science, vol. i. pp. 231-232, Sydney, 1887 ; 

 ibid. vol. v. p. 31, Adelaide, 1893; also Trans. Boy. Soc. S. Austr. vol.'ii. 1879, 

 p. lxiv. 



4 ' Beport on the Bowen Biver Coalfield,' by Bobert L. Jack, p. 7, par. 39. 

 Brisbane, 1879. 



5 Journ. Boy. Soc. N. S. Wales, vol. xiii. 1879, ' Notes on the Occurrence of 

 remarkable Boulders in the Hawkesbury Bocks,' pp. 105-107. 



