334 W. B. Clarke on the Sedimentary 
the St. Louis limestone sea re-occupied nearly the whole area 
peed occupied by that in which the Kinderhook beds were 
deposited. At the close of the St. Louis limestone epoch 
there re so extensive a recedence of the sea that the Chester 
limestone did not probably reach within two hundred miles of 
the southern limit of Iowa. At the close of this last Subcar- 
boniferous epoch there was another remarkable re-occupancy 
of shallow seas, so that the Coal-measures received their first 
deposits, not only upon the surface of the St. Louis limestone, 
but also overlapped upon the Kinderhook rocks, and doubtless 
others besides ; for we have no assurance that the outliers 
before referred to were not at one time connected parts of the 
great coal formation. 
Iowa State University, March 2d, 1868. 
Arr. XXXVII.— Remarks on the Sedimentary Formations 
of New South tment illustrated by references to other Pro- 
vinces of Australasia; by the Rev. W. B. Cuarxs, M.A., 
FG.S8., F.R.G.S8., ete. 
Ir we inspect the map of Australia, we observe that the 
coasts of Victoria, New South Wales and Queensland, follow 
the general directions (with some irregularity) of the Cordillera, 
or elevated land separating the waters flowing directly to the 
pot ae those which, draining the interior, ee to 
e 
The Murray river receives some part of its tributaries from 
the highlands of Victoria, and others from New South Wales; 
whilst the Darling and its tributaries collect the remainder of 
the supply, from as far north as 25° §. 
‘The Cordillera thus sweeps round in an irregular curve from 
W. to E. to the head of the Murray—and thence, northerly 
and northeasterly, to the head of the Condamine ; trending 
eg bt — that point’ to 21° S., whence it strikes to 
the north, terminating its course at Ca ape Melville, in 14° 8., 
about the Ss tatian of 144° 30’, which is that of Mount Alex- 
= ander i in Victoria. 
2 more westerly and southerly trend of drainage is repre- 
d by te son and Barcoo rivers, whic tet He off the 
ern if F ustra stvalis, 
he € lera tele dastitoak by Strzelecki in 1845, was tra- 
am ehh a considerable = of its diversified course 
1 tha anthar 
a 
