182 
an opportunity of visiting the locality, [ cannot speak definitely 
about it. 
Caves in the same rock are also said to occur in the neigh- 
bourhood of Mount Rat, which lies about four miles to the 
north-west. 
The fossil fauna of this locality contains Conocephalites 
australis, Orthisina, sp. nov., Ophileta, sp. nov., Salterella, n. sp., 
and some other species, which are enumerated by Professor R. 
‘Tate in his paper on “ The Cambrian Fossils of South Australia.” 
Minerals occur in the grey rock, but apparently only in small 
quantities. I obtained small specimens of the green and blue 
carbonates of copper, copper pyrites, galena, calcite, and fluorite. 
GLACIATED Rock SURFACES. 
To the north of the township there are evidences which seem 
to be attributable to none other than glacial action, for the 
exposed surface of the rock is very flat and smooth, and in many 
places scratched and scored, the general direction of the striz 
being north and south, and occasionally deep and smooth grooves 
are met with. I did not see any rocks of foreign material in this 
locality but numerous angular and subangular fragments of the 
hard limestone. At the coast, however, about one mile to the 
north of Port Vincent, there are several large boulders of a coarse 
granite, with large felspar crystals, which may have been carried 
there by glacial agency ; but as I am informed that granite 
occurs in situ both to the north and south of this locality, the 
presence of these boulders may have been due to other causes. 
In this connection I would draw attention to an appearance 
on the weathered surface of this limestone, which simulates very 
much glacial strie. Upon breaking a fragment off the rock it is 
found to be due to a series of small veins of calcite being 
weathered at a faster rate than the matrix, this being a little 
below the level of the surface. 
Tn conclusion, it might be interesting to mention that during 
the recent dry season many farmers have been sinking for water, 
and in some places a good supply has been obtained at a depth of 
from 7 to 12 or 14 feet, that is just below the travertine in a 
deep red loam which overlies the Cambrian limestone in places to 
a depth of a few feet. 
