The bed of the creek was full of blocks of Sienite, of hornblende Porphyry, of greenish Pegmatite, and of cellular Basalt.

The river here formed a large sheet of water; large masses of a white Sienite protruded out of it, opposite the junction of the creek.

The opposite bank exhibited a very perfect and instructive geological section of variously bent and lifted strata of limestone, which was afterwards found to contain innumerable fossils, particularly corals and a few bivalve shells.

The Rev.W.B.Clarke, of Paramatta, kindly undertook to examine the fossils brought from this locality.

One he determined to be an undescribed species of Cyathophyllum, and has done me the honour to give my name to it [Refer Note 1 at end of chapter].