456 PROCEEDINGS OF SECTION C, 
Associated with the conglomerate, and generally resting upon 
it, are soft silicious sandstones, as at Wild Duck Creek, Bacchus 
Marsh, &e. Soft, grey, thin-bedded shales cover the conglomerate 
in places at Wooragee. 
Mode of Deposit. 
Taking into account the composition and character of this 
conglomerate, as well as the arrangement of its constituents, 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 generally carry. These 
became broken off eventually, and floated away to destinations 
governed by currents and winds, the dirt, stones, &c., being 
deposited on the floor of the sea, or possibly lake, in which the 
icebergs floated. 
Unmistakeable ice scratches have been observed by Mr. H. Y. 
L. Brown, F.G.S., Government Geologist in South Australia. It 
would be interesting to ascertain if any conglomerates, similar to 
those under notice, occur there. 
Whence Derived. 
Although it is apparent that most of the constituents of the 
conglomerate are not of local origin, or even derived from 
Victorian rocks, it is by no means apparent whence these travelled 
stones have come. Tasmania may have furnished some of them, 
or the lands they came from may now lie beneath the ocean. 
So many problems of intense interest centre about these rocks 
that it would be desirable to record every observation and collate 
what has already been recorded in some convenient manner. The 
geological section of this association could, perhaps, deal satisfac- 
torily with this subject. 
12,—_UNIFICATION OF THE COLOURATION OF GEO- 
LOGICAL CHARTS OF AUSTRALIA, TASMANTA, 
AND NEW ZEALAND. 
By ArtHur EVERETT. 
[4 bstract. | 
Havine had considerable experience in colours and colour printing, 
I was encouraged to write this short paper owing to an opinion 
expressed by the President of the Geological Society of London, 
