Mines and Mineral Statistics, 
155 
Soiitlieini Australia, also, tliere does not appear to be any con- 
siderable amount of strata Avhicli could be referred to tliis epoch.. 
Transmutation has, however, acted vigorously in New South 
Wales. 
Loavek Paljeozoic Eccas, 
(^Loio:r a id Upper Silnrian?) 
Of these there are undoubted evidences in some limited districts 
of Tasmania and Queensland, whilst in Victoria and IS'ew South 
Wales considerable areas are occupied bv them. 
AV cstern Australia has as yet not furnished any fossils of 
Silurian age; but, according to Mr. V. L. Brown, Government 
Geologist, there are clay slates, schists, and other rochs which 
may be Silurian much transmuted, judging from their position and 
composition. 
The North-west territory is in much the same condition. 
South Australia has furnished two fossils, Fentamerus ollonc/ns 
and Cruziana cucnrhifa, slated by the Eev. Julian E. T. Woods, 
in his account of the Geology of that Colony (p. 20 and 21). as 
belonging to the Silurian epoch. The former occurs in New 
South AVales ; the latter in the Bolivian Andes. 
la Tasmania along the Goi’don and Prankliu Eivcrs occur 
various Silurian fossils, some among which identical with those 
of New South AVales wan-e noticed by me ; but Mr. Gould 
considers others to be Lower Silurian. This formation evidently 
exists in that Colony, for in 1878 I received from Air. T. Stevens, 
P.G.S,, some Trilobite-sandstone from the western part of the 
Island, ■which Air. Etheridge determined for me to contain 
Fhacops^ Opifffia and Caljmene ; and to these Professor Bradley, of 
the TJ.S., to whom was forwarded by me some of the rock, has 
added Conoceplialifes^ thus proving the relations of the rock to 
the Potsdam sandstone. 
Air. Gould mentioned, in June, ISOO, a Cah/mene at the base 
of the Eldon Eange. I found that genus also in Ncav South 
AVales in 1852. In Adetoria Professor Al’Coy has made a list of 
twenty-five Lower and fifty- three Upper Silurian fossils, inclu- 
ding in the former twenty-three llydroid zoophytes, and another 
species belonging to the Upper formation. Of tlio Graptolitid® 
only one is said to have been found in this Colony, and I ])resume 
that it is more likely to belong to the Upper ISilnrian than to the 
Lower, though towards the AEctorian boundary, along the Delcget 
Eiver, Lower Silurian rocks, according to some, are supposed to 
make their appearance. 
New South ACales offers a more determined evidence of the 
existence of certain Silurian deposits, but singularly enough 
nothing has been positively shown of the existence of any fossils 
