346 W. B. Clarke on the Sedimentary 
rang the blocks of Cannel are found in an intermediate position, 
between the top of the coal measures and the upper marine 
beds, which, if not the overlying measures, bear the very 
strongest resemblance to the Hunter river series. 
awarta, also, there are shales which are above that 
geological position, and which produce oil for illumination, but 
are not of the peculiar character of the Cannel at Mount York, 
which, in a great degree, resembles the Bog Head mineral of 
Scotland, only it is more valuable. Specimens of all the pro- 
ducts under the present heading will be found in the Exhibition. 
It has been an object of inquiry whether Petroleum springs 
exist in New South Wales, Such have been reported from the 
Corong in South Australia, and from Taranaki in New Zealand, 
and from Victoria. The former is, we learn, a mistake ; being 
probably at a point where certain animal substances have 
ities, known to me for many years, in which Petroleum exudes ; 
and there are two or three in Western Australia, the products 
from which I have examined. Nothing of value has as yet been 
found. (See Mr. Keene’s collection exhibited in London, 1862, 
and again exhibited, pp. 81-89.) 
Seconpary Rocks. 
I have previously made mention of the Hawkesbury and 
Wianamatta beds ; anda collection of them, illustrated by a 
catalogue, was exhibited at Melbourne. Some of these were 
also shown in the Universal Exhibition of 1854, and therefore 
have not now been repeated. ‘ 
Whether they be acknowledged hereafter as Paleozoic (which 
the fishes determined by Sir P. M. de G. Egerton, Bart., would 
justify), or whether, with Mr. Selwyn, we consider them (against 
that evidence) to be Secondary—or whether we suppose, with 
him, that the beds in Victoria called by him Secondary are @ 
persion of my Wianamatta beds—there is nothing to explain 
the statement made by de Zigno, in his valuable paper before 
the Academy of Science, in Padua, on 23rd April, 1863, in 
which he says : : 
_ Altri depositi pure d’ incerta classificazione ci si schierano innanzi 
prendendo ad esaminare i terrenia combustibile fossile della Nuova 
oe e della Tasmania, che il M’Coy aveva fino dal 
0 di hi rire come aged? 
posit collocati Eien crew distanza di quelli le cut 
f seeBhe hs sig * egg : 
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