Geology.] 
NATURAr. HISTORY. 
573 
coast, through a country not more than three feet in general 
elevation above high-water mark ; the banks being low and 
muddy, and thickly wooded: And this description is ap- 
plicable also to the Alligator Rivers on the south-east of Van 
Diemen’s Gulf, and to the surrounding country. The out- 
line of the Wellington Hills, however, on the mainland 
between the Liverpool and Alligator R,ivers, is jagged and 
irregular ; this range being thus remarkably contrasted with 
the flat summits which appear to be very numerous on the 
north-western coast. 
The specimens from Goulburn Islands consist of reddish 
sand-stone, not to be distinguished from that which occurs 
beneath the coal formation in England. On the west of these 
islands the coast is more broken, and the outline is irre- 
gular : but the elevation is inconsiderable ; the general height 
in Cobourg Peninsula not being above one hundred and fifty 
feet above the sea, and that of the hills not more than from 
three to four hundred feet. 
On this part of the coast, several hills are remarkable for 
the flatness of their tops ; and the general outline of many of 
the islands, as seen on the horizon, is very striking and pe- 
culiar. Thus Mount Bedwell and Mount Roe, on the south of 
Cobourg Peninsula ; Luxmoore Head, at the west end of Mel- 
ville Island ; the Barthelemy Hills, south of Cape Ford ; Mount 
Goodwin, south of Port Keats ; Mount Cockburn, and several 
of the hills adjacent to Cambridge Gulf, — the names given 
to which during the progress of the survey sufficiently indi- 
cate their form, as House-roofed, Bastion, Flat-top, and 
Square- top Hills ; — Mount Casuarina, about forty miles 
north-west of Cambridge Gulf; a hill near Cape Voltaire; — 
Steep-Head, Port Warrender; — and several of the islands off 
that port, York Sound, and Prince Regent’s River ; — Cape 
Cuvier, about latitude 24°; — and, still further south, the 
whole of Moresby’s flat-topped Range, — are all distinguished 
