South-west bay of GOULBURN’S SOUTH ISLAND, two hundred and fifty miles west of the Gulf of Carpentaria (Narrative 1).  Coarse-grained reddish quartzose conglomerate and sandstone; resembling the older sandstones of England and Wales, and especially the mill-stone grit beneath the coal formation.  Fine greyish-white pipe-clay; of which about thirty feet in thickness were visible, apparently above the sandstone last mentioned.  Coarse-grained, ferruginous sandstone, containing fragments of 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 (volume 1); and a distant head in the view consists of the same materials.

SIMMS ISLAND, on the west of Goulburn’s south Island (Narrative 1) is composed of a reddish conglomerate, 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 sandstone 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.

VANSITTART BAY, about one hundred and forty miles north-west of Cambridge Gulf.  Reddish quartzose sandstone, or quartz-rock.  Indistinct specimens of greenstone, with adhering quartz; apparently a primitive rock.

PORT WARRENDER, at the bottom of Admiralty Gulf, about forty miles south-west of Vansittart Bay (Narrative volume 1).  Epidote and quartz, in small crystals confusedly interlaced; apparently from veins, or nests, but unaccompanied by any portion of the adjacent rock.  The structure in one of these specimens approaches to the amygdaloidal.  A compact greenish stone, with disseminated crystalline spots of epidote, and of quartz, and apparently consisting of an intimate mixture of those minerals, is also among the specimens from Port Warrender.

All these specimens are from detached water-worn masses at the foot of Crystal Head, on the south-west of the port.  The summit of the head is flat and tabular, and the rocks in the vicinity are described by Captain King as consisting of siliceous sandstone.  Chalcedony, apparently from amygdaloid of the trap formation, was also found at Port Warrender.