74 
Geology and Physical Geography : 
contains, amongst other fragments, sub-angular pieces of granite 
of a different character to any occurring in situ in the district. 
I remember to have heard the late Sir R. Daintree say that these 
fragments resembled no granite he was acquainted with occurring 
as a rock mass nearer than Queensland. 
The general appearance of the conglomerates, and the character 
and mode of arrangement of their materials, are suggestive of 
transport by marine glacial action, though, as remarked by Mr. 
Selwyn, grooved or ice-scratched pebbles have not been observed. 
In this respect the Darley conglomerates resemble those at Wild 
Duck Creek, provisionally referred to as Upper Pnhcozoie. It is 
quite possible that the latter may be of Mesozoic age, as the 
absence of clear Palaeontological evidence renders it impossible to 
arbitrarily fix their position. Patches of similar coarse con- 
glomerates with yellow sandstones are shown on the geological 
maps as occurring on the Cobban River, near Kyncton, and between 
Kyneton and Ilcathcote, where the Silurian rocks are thinly 
capped by a conglomerate, containing pebbles of quartz, quartzite, 
bard sandstone, granite, and porphyry. 
The fossil plants found in the Bacchus Marsh Sandstones have 
been figured and described by Professor McCoy in Decade .No. 
II. of his Prodromua of Victorian Palaeontology. They comprise 
three forms of fossil ferns, namely, Gangamopteris angustijfolia 
(McCoy), G. spatulata (McCoy), and G. oblir/ua (McCoy). 
These Gangamopteri are to f erred to by Professor McCoy asbeim*- 
associated with the Glossopteris Browniana of the New South 
Wales coal-fields, and, ns indicating the relationship of the 
rocks in which they are found, to the “Takhir” beds of the 
Indian coal-fields. From what lias been further ascertained, 
however, it appears that Glossopteris is found in New South 
Wales in two sets of beds, between which are intercalated marine 
beds, containing fossils of distinctly Carboniferous (Pahcozoic) 
aspect. 
Mesozoic Carbonaceous Rochs of (1) the Wannon , (2) Cape 
Otway, and (3) Western Port and South Gippsland districts . 
The nroas occupied by Mesozoic rocks have been generally de- 
scribed in a previous chapter ; but as it is desirable to indicate as 
nearly as possible the known limits of the surface exposures of 
these roeks, and also the areas covered by newer deposits which 
they may reasonably be supposed to underlie, a more detailed 
description of boundaries is here given for each of the three great 
Mesozoic areas. 
The Mesozoic rocks of the Wannon make their appearance 
from beneath overlying Tertiary and Volcanic layers in the 
Wannon River, between Hamilton and Coleraine, and are visible 
thence westward as far as the Glcnelg River, beyond which they 
