72 
peesident’s addeess — SECTION c. 
Mr. Dunn records the wide distribution (op. cit., p. 453) of the 
conglomerate on either side of the Main Dividing Range, especially at 
"Wild Duck Creek on the north, and Bacchus Marsh on the south. 
At Turton’s Creek, a few miles N.N.E. of Poster (Grippsland), a 
conglomerate of well-rolled boulders and pebbles is thought to be of 
probable glacial origin, and near JX hi 1 1 it is stated that a boring made 
for water pierced a conglomerate that strongly resembles what is 
proved to be of glacial origin. He assigns a thickness of only 100 
feet to the Bacchus Marsh conglomerates. 
He confidently correlates the Bacchus Marsh and Wild Duck 
Creek beds with the Dwyka conglomerates of South Africa, the latter 
of which are there capped by the Glossopteris-he&vm g Ecca beds. 
As his account of these conglomerates is the first detailed one, it 
is worthy of being quoted. He states (op. cit.,]). 455) — “ Almost every 
species of rock older than the conglomerate itself is represented — 
granites in great variety, gneiss, schist, quartz rock, sandstones, 
lydianite, agate, porphyry, amygdaloid, shales, Ac., are met with in 
great, variety ; vein quartz and jasper are also present, # # # In 
size the material of the conglomerate ranges from the finest silt up to 
great blocks several feet across, and weighing in some cases probably 
twenty to thirty tons. 
“ Prom the well-rounded, almost polished pebble or boulder to the 
rough angular fragment of rock that has been torn from its jiarent 
mass, and not subsequently abraded, all are represented in these 
conglomerates. 
* k Generally the colour of the groundmass is dark grey, but there 
are local variations, such as might be anticipated from the manner in 
which the conglomerates have been deposited. 
“Great numbers of well-rounded, large, bard granite boulders 
having t)ink- coloured felspar, are found at Wooragee, but here as else- 
where the most numerous are pebbles of a very fine-grained argillaceous 
rock that is free of laminations. It is of brownish colour and soft, 
and on these most commonly are found the groovings, scorings, 
striations, and fine scratches that stamp the conglomerate as of glacial 
origin. Not only are the pebbles, Ac., scored and scratched, but great 
numbers are rubbed on one or more sides (faceted). Though rounded, 
many of the boulders, Ac., indicate from their peculiar form that water 
alone was not the agent,” * * * (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. 
“Much of the material is foreign, and many of the rocks are not 
known to occur at present in this continent anywhere near Victoria. 
Probably in some distant land, not necessarily to the southward, 
glaciers slowly pushed their way into the ocean laden with such 
material as glaciers usually carry. These became broken off eventually, 
and floated away to destinations governed by currents and winds, the 
dirt, stones, Ac., being deposited ou the floor of the sea, or possibly 
lakes, in which the icebergs floated. * # # Tasmania may have 
furnished some of them” \_i.e., the erratics — T.W.E.D.]. 
In 1S91 Mr. G. B. Pritchard recorded the occurrence of glaciated 
rock surfaces at a spot to the north of the township of Curramulka,* 
on the east side of Yorke Peninsula, South Australia. 
* Trans. Roy. Soc. S. Australia, vol. xv., for 1891-92, p. 182. 
