614 
APPENDIX. 
[C. 
quartz, from above the pipe-clay. — The appearance of the 
cliff from which these specimens were taken, is represented 
in the view of the bay on the south of Goulburn Island, 
(vol. i. p. 66) ; and a distant head in the view consists of 
the same materials. 
Simms Island, on the west of Goulburn’s south Island, 
(Narrative, i. p. 70) — is composed of a reddish conglome- 
rate, nearly identical with some of the specimens above- 
mentioned. 
The western side of Lethbridge Bay, on the north of 
Melville Island, consists of a range of cliffs like those at 
Goulburn’s Island ; the upper part being red, the lower 
white and composed of pipe-clay. The western extremity 
of Bathurst Island, between Cape Helvetius and Cape 
Fourcroy, is also formed of cliffs of a very dark red colour. 
Lacrosse Island, at the mouth of Cambridge Gulf, 
about one hundred miles from Port Keats. — Reddish, very 
quartzose sandstone ; from a stratum which dips to the 
south-east, at an angle of about ten or fifteen degrees. 
Micaceous and argillaceous fissile sandstone, of purplish 
and greenish hues, in patches, or occasionally intermixed ; 
— precisely resembling the rock of Brecon, in South Wales, 
and, generally, the ‘ old red sand-stone’ of the vicinity of 
Bristol and the confines of England and Wales. Fine- 
grained thin-slaty sandstone, resembling certain beds of 
the coal formation, or of the millstone grit, is found in 
large masses, under an “ argillaceous cliff,” on the north 
side of Lacrosse Island. 
The specimens from the interior of Cambridge Gulf are 
from Adolphus Island, and consist of reddish and grey 
sandstone, more or less decomposed. 
