18 Sedimentary Formations 
and that in March, 187S, Mr. ('. S. Wilkinson sent mo for com¬ 
parison a specimen of fossiliferous limestone, which 1 find also 
came from the Murrumbidgce not from Yass, and which contains 
a plate of a Coccosteus, of a triangular shape, studded with 
tubereules of the same form as those on a plate of M‘Coy’s C. 
trigonaspis , but somewhat different on the whole from his figure, 
(Sec “ British Palaeozoic Fossils,'' PL 2. C. Fig. 0 e.) It is 
attached to a portion of bone, and is in good preservation and 
in the midst of fragments of other fossils, the matrix being 
apparently the same as the Yarradong or Cavan limestone. It 
was found by Mr. Hume. 
Tasmania has at present furnished no well-established proof of 
the distinct existence of Devonian rocks. But it is a fair 
inference, first suggested by the late Mr. Salter, that the broad- 
winged Spirifers common there in the Palasozoic beds imply the 
probable occurrence. Mr. Jukes and Mr. Gould both repeated 
the inference* Mr. Darwin and Mr. Selwyn agree that some 
of the Tasmanian fossils “occur in the Silurian, Devonian, and 
Carboniferous strata of Europe.” This is nearly all that is 
known respecting their position. 
Western Australia, according to Mr. Brown’s Report, adds 
nothing to the history of the Middle Palaeozoics ; but Mr. IT. 
Gregory indicated on his map and in his report the existence of 
Devonian rocks near York and in other parts of that Colony. 
Having examined the rocks so indicated, I can only state my 
belief that they have no pretension to any such antiquity, and 
are probably mere collections of loose granitic matter and other 
drift cemented by ferruginous paste, which has since become 
transmuted into concretionary nodules and hrematite. There are 
also pebbles of trap, much decomposed, in the so-called Devonian. 
They may perhaps he more properly considered as representing 
the Inferite of India. 
Queensland, on the other hand, according to Daintree’s notes, 
exhibits a stretch of Devonians extending through ten degrees of 
latitude. Not the least interesting facts arc that the Tin Mines 
of Queensland (as well as those of New South Wales) occur in 
granites of Devonian age. 
At Gym pie, on the Fiver Mary, rich gold-bearing quartz-reefs 
occur in transmuted slates and other tilted beds, which are com¬ 
posed of detrited dioritic matter and brecciated deposits in 
which are abundance of fossils of doubtful aspect, and these I 
before referred to some part of the Carboniferous formation. Mr. 
Etheridge considers and has described the fossils as Devonian. 
They certainly have much in common with the Devonian beds 
of North Germany and Belgium, described by Sedgwick and 
Murchison, as I stated in the Second Edition, p. 10. It is right, 
