This island, viewed from our anchorage on its north-west side, presents the appearance of a ridge connecting two rounded eminences, with a sharp sea-face exposing the stratification of the rock.
This is a micaceous rock, assuming at one place the appearance of mica slate, and at another being a conglomerate, with frequent veins of quartz.

The strata, which are often flexuous, or slightly contorted, have a westerly dip of 60 degrees, and the strike is North-North-West and South-South-East.

On the windward side there is a long gradual slope, covered with tall coarse grass, among which many quail were found.

The shore is fringed with the usual maritime trees and bushes, and an extensive mangrove bed runs out upon the reef in one place.

This reef is of great extent, stretching out to windward upwards of a mile, as far as a small rocky isle like a haycock.
LOW ISLES.
On July 7th we anchored to leeward of the Low Isles, in the northern part of Trinity Bay, in eight fathoms, mud, half a mile from the shore, and remained there for the four succeeding days.