292 1>R0F. T. W. EDGEWOETH DAVID ON [May 1 896, 



the Carboniferous flora at an early date, while in Southern Africa 

 we find still a Carboniferous or Coal-Measure flora of a higher 

 stage, and only hereafter the change of climate appears to have taken 

 place there. When the conditions of ice-action ceased, there ap- 

 peared in Africa, India, Yictoria, New South Wales, etc., a luxuriant 

 flora of a peculiar character, which was, however, foreshadowed by a 

 few forms in the Lower Coal Measures in New South Wales. In this 

 period falls the deposition of the Karoo Formation in Africa, the 

 Gondwana System in India, the Newcastle Beds, etc., in New South 

 Wales, the Bacchus Marsh Beds in Yictoria, and so on.' 



In 1890 Mr. E. J. Dunn x published a very important paper on 

 the glacial conglomerates of Victoria. He showed that they were 

 widely distributed on either side of the Main Dividing Eange of 

 Yictoria, Wild Duck Creek near Heathcote to the north, and 

 Bacchus Marsh to the south, being the principal localities. He 

 described the glacial conglomerates as consisting of fragments of 

 rock up to 30 tons in weight, mostly well rounded, frequently 

 polished, strongly striated, grooved and faceted, more rarely angular, 

 embedded in a groundmass of a prevailing dark grey colour. The 

 rocks constituting the boulders are stated to be for the most part 

 foreign to the district. Mr. Dunn says {op. cit. p. 456), ' No other 

 conclusion can be arrived at than that floating ice has been the 

 agent by which the material has been brought into its present 

 position .... Tasmania may have furnished some of them ' [i. e. the 

 erratics]. 



In 1891 Mr. G. B. Pritchard 2 recorded the occurrence of glaciated 

 rock-surfaces at a spot to the north of the township of Curramulka, 

 on the eastern side of Yorke Peninsula, South Australia. This 

 evidence can be confidently correlated with that previously dis- 

 covered by Prof. Ralph Tate at Hallett's Cove. 



In 1892 Mr. E. J. Dunn 3 published another important and well- 

 illustrated report relating specially to the glacial deposits of Wild 

 Duck Creek. Mr. Dunn recorded therein his discovery of a strongly 

 glaciated rock-surface near Wild Duck Creek, the strise trending 

 north and south. The altitude of the upper portion of the glacial 

 conglomerate is stated to be about 700 feet above the sea. 



In 1892 Messrs. Dunn and T. B. Moore 4 published evidence of a 

 glacial conglomerate, 3000 feet above sea-level, near Zeehan in 

 Tasmania. The included boulders were found to be beautifully 

 striated. This formation should, in Mr. Dunn's opinion, be corre- 

 lated with that of Bacchus Marsh. 



In 1893 Mr. T. B. Moore 5 recorded the occurrence at Mount 

 Tyndall of a glacial conglomerate, considered by him to be of 



1 Eep. Austr. Assoc. Adv. Science, vol. ii. pp. 452-456, Melbourne, 1890. 



2 Trans. Roy. Soc. South Australia, vol. xv. (1891-92) p. 182. 



3 ' Notes on the Glacial Conglomerate, Wild Duck Creek,' by E. J. Dunn, 

 RG.S. ; Special Eeports, Department of Mines, Yictoria. Melbourne, 1892. 



4 Proc. Roy. Soc. Yictoria, n. s. vol. vi. (1894) pp. 133-138, pi. viii. 



5 ' Discovery of Glaciation in the Vicinity of Mount Tyndall, in Tasmania/ 

 by T. B. Moore, Proc. Roy. Soc. Tasmania, 1893, pp. 147-149. 



