450 T. W. E. DAVID AND E. F. PITTMAN. 
field, and it may now be considered almost an established fact 
that the Tomago Coal Measures have been overlapped by the 
Newcastle Coal Measures and have thinned out against a rising | 
surface of the Upper Marine Series throughout the greater por- 
tion of the Illawarra District. 
III. Previous Bores for Coal in the neighbourhood of Sydney. 
(1.) A bore was put down to a depth of 1,312 feet at Newington 
near Parramatta, by Mr. Coghlan, with a view of reaching the 
coal measures.* According to this report, which was made by 
the late Government Geologist, Mr. C. 8. Wilkinson, the coal 
measures were reached near the bottom of the bore, and a specimen 
of Glossopteris was found in part of the core. We are of opinion 
however, that Mr. Wilkinson in making this statement was merely 
quoting the information supplied to him, and did not intend to 
record them as the result of his own observation, as he never, as 
far as we are aware, alluded to this statement, although he on 
more than one occasion discussed the subject of this bore with 
one of the authors. It seems incredible that: the coal measures 
should lie at a depth of only 1,300 feet at Newington, near Parra- 
matta, when they are 2,500 feet deep at Liverpool, about twelve 
miles southerly from Parramatta, and over 2,900 feet deep at 
Cremorne, about sixteen miles easterly from the same locality, 
there being little difference in the respective surface levels, and 
there being probably but very little dip between Liverpool and 
Parramatta. In all probability therefore this bore did not reach 
the coal measures. 
(2.) At Moore Park a bore was carried down to a depth of 
2,170 feet without striking the coal measures.f 
(3.) At Botany a bore was put down toa depth of about 2,200 
feet without penetrating the horizon of the coal measures. The 
chocolate shales were struck at a depth of 1,000 feet. t 
* Annual Report, Department of Mines, Sydney, 1878, p. 155. 
+ Annual Report, Department of Mines, 1880.—Report by Mr. C. S. 
Wilkinson, p. 241. 
t~ Annual Report, Department of Mines, 1879, p. 208, and Mineral 
Products etc. of New South Wales, 1887, plate vi. 
