44 
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once connected the upper Silurians which lie to the east of 
Mount Martha with those east of Berwick. When 
further explorations shall have been made in this tract, 
and the surveys completed, the connection between the 
auriferous upper Silurians of the Yarra basin with rocks 
of the same a«;e in Mornington will be established. 
At Berwick we found a strip of country 
broken into well-rounded bills, and with 
very rich soils, altogether different in cha¬ 
racter to the sandy tertiaries. It is formed 
of a patch of older volcanic rock, similar 
in age and composition to that found at 
Essendon, Bacchus Marsh, Portarlington, 
Flinders, French Island, Phillip Island, and 
Griffith’s Point. 
A section near Berwick shows the rocks 
as represented in the woodcut. 
The older volcanic rock is met with again 
about six miles east of Buneep, where there 
is a dense forest on deep chocolate soil as 
rich as can be found anywhere. The 
isolated patches which are found on the 
Macalister, and the large area occurring 
south of Tom’s Cap (probably resting on 
mesozoic rocks, as at Griffith’s Point, 
Bacchus Marsh, and Portarlington), would 
lead one to infer that it underlies to some 
extent the tertiary sands in the valley of 
the La Trobe. 
There are not less than 88,000 acres of 
older volcanic rock exposed in Gippsland, 
every part of which is covered with a deep rich soil. 
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