To these may or may not be added another high and much larger detached island situated about five miles to the North-West, about midway between the remainder of the group and the mainland.

Number 4 is formed of two wooded rocky eminences at its extremes, connected by level ground, consisting of dead coral and sand, thickly covered with trees at one part, and scattered bushes at another.

The low woody portion of this island is strewed with flat blocks of the same kind of recent coral conglomerate that occurs in situ on the beach, also with quantities of pumice twelve feet above high-water mark of spring tides.

There is little underwood, the trees overhead forming a shady grove.

Herbaceous plants are few in number--of the others I shall only mention a wild nutmeg, Myristica cimicifera, not, however, of any commercial importance.
SHELL-COLLECTING.
The Torres Strait rat was exceedingly plentiful here, in hollow trees and logs, also about the roots of the pandanus trees and under blocks of coral.