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.
The epidote of this place is in general of a pale-greenish colour, but is mixed with, and sometimes appears to pass into, spots of a rich purplish-brown.

The specimens resemble generally the epidote of Dauphiny and Siberia; but Mr.Levy, who has been so good as to examine them, informs me that the crystals exhibit some modifications not described either by Hauy, or by Mr.Haidinger in his paper on this mineral, and which are probably peculiar to this locality.
WATER ISLAND, on the west side of CAPE VOLTAIRE, at the south-west entrance of Port Warrender, is described (volume 1) as consisting of quartzose sandstone; as is also KATER ISLAND, in Montagu Sound.