Sequence of Rocks 
01 
I 
l 
Prrmo- 
Carron- 
IFEROUS. 
Coal Measures of New South Wales, Newcastle, Illa- 
warra, and Lithgow, with Olossopterie. Upper and 
Middle Bowen River formations, Queensland. Collie 
River and Irwin River, West Australia. Tasmanite 
beds, Mersey and coast about the estuary of the Der- 
went, Tasmania 
{ 
Carboni- 
ferous. 
Port Stephens District, New South Wales. Gympie, 
Lower Bowen, and Star formations, Queensland. Also 
the lower Coal Measures of Tasmania 
Devonian. 
Mt. Lambie sandstones, Rydal, New South Wales. 
Avon River and Mt. Tamoo beds, Victoria. Burdekin 
beds, Queensland. Sandstones and grits, Kimberley, 
West Australia. Fingal slates, Tasmania. 
Silurian, 
Highly-inclined clay slates and talcose slates, New 
South Wales, South Australia, and West Australia and 
Victoria. Graptolbe beds of Victoria Yass and Mo- 
long limestones. New South Wales. “ Larapintine ” 
limestones, Macdonnell Ranges. Queen River schists 
and slates, and the Gordon River Group, Tasmania. 
Cambrian. 
Olenellus and Salter ella beds of Kimberley, West 
Australia. Ardrossan beds of South Australia. 
Magog and Caroline Creek groups, Tasmania. Yorke 
Peninsula series, South Australia. Kimberley, West 
Australia. Heathcote, Victoria. 
Quartzite and some metamorphic rocks of Tas- 
mania. Mount Lofty Ranges, South Australia. 
[The statement (page 90) that Cretaceous rocks are the source of artesian water 
in north-western New South Wales is allowed to stand in deference to the generally 
accepted views of local geologists, as recorded in the publications of the Depart- 
ment of Mines of this colony. The present writer is of opinion, however, that the 
artesian supply is derived entirely from Triassic or Trias-jura beds which underlie 
the Cretaceous, and that the Cretaceous beds are not the source yielding artesian 
water in New South Wales.] 
Pr^e- 
CAM BRIAN. 
NATIONAL MUSEUM OF VICTORIA 
