Neio South Wales . 
i r 
§ 2. Lower Paleozoic Bucks. — Lower and Upper Siler tax. 
Of these there arc undoubted evidences in some limited dis¬ 
tricts of Tasmania and Queensland, whilst in Victoria and New 
South Wales considerable areas arc occupied by them. 
Western Australia has as yet not furnished any fossils of 
Silurian age; but, according to Mr. Y. L. Brown, Government 
Geologist, there arc clay slates, schists, and other rocks which 
may be Silurian much transmuted, judging from their position 
and composition. 
North Australia is in much the same condition, where no 
reliable geological surveys have been yet made. 
Much valuable information was in 1864 collected by the Ecv. 
Julian E. Tenisou-Woods, and published at Adelaide, in 
which gold-hearing rocks were but slightly anticipated. Since 
then, the Northern Territory (assigned to South Australia) has 
exhibited gold-reefs in probably Silurian strata ; and very recently 
a tract of several thousand square miles in extent, between the 
Victoria Kiver and the Gulf of Carpentaria, along the Daly 
Eiver and the central lines of communication by telegraph, lias 
been reported as auriferous, and, I anticipate, will be found rich. 
South Australia proper, according to Mr. Woods (“ Geology,'' 
pp. 20, 21) has produced two Silurian fossils, Cruziinia cucurbit a 
and Fentamcrus ohlongns. The former occurs in Bolivia, and the 
latter in New South Wales. 
Nothing lower than Siluro-Devonian, according to Mr. 
Etheridge (in “Review of Mr, Raintree'a Fossils, 9 ' Q.J.G.S., August, 
1872), bad up to that time been found in Queensland. But as 
elsewhere mentioned, I considered the Brisbane slates to he 
analogous with those of the Anderson Creek Gold-field in 
Victoria, both of which groups I examined personally in situ. 
The latter are held to be Upper Silurian. 
In Tasmania, along the Gordon and Eranklin Rivers, occur 
various Silurian fossils, some among which identical with those 
of New South Wales were noticed by me ; but Mr. Gould con¬ 
siders others to be Lower Silurian. This formation evidently 
exists in that Colony, for in 1873 I received from Mr. T. Stevens, 
E.G.S., some Trilobite-sandstone from the western part of the 
Island, which Mr. Etheridge determined for me to contain 
Rhncops, Ogygia, and Calgmene; and to these Professor Bradley, of 
the U.S., to whom was forwarded for me by Professor J. D. Dana 
some of the rock, added Conocephalites, a true Lower Silurian, 
fossil in America, Sweden, Bohemia, and Spain, a curious position 
for which in the last-named country is assigned in an interesting 
paper by Senor Casiano de Prado (“ Bull . Soc. Geol. dc France 
2 d, ‘ S., xvii, 516.) 
