Iguanas, geese, penguins, gulls, and seals of the hairy species, were the sole inhabitants of this rock. After leaving Seal Island, we landed on the sandy beach abreast of the anchorage; in doing this the boat filled, and the instruments were so wetted, that they were left on the beach to dry during our absence. Our ascent, from the hill being steep, and composed of a very loose drift sand, was difficult and fatiguing; but the beautiful flowers and plants, with which the surface of the hill was strewed, repaid us for our toil. These being all new to Mr. Cunningham fully occupied his attention, whilst I remained upon the summit, from whence a good view was obtained of the Eclipse Isles, and Vancouver's breakers, both of which are well laid down by Captain Flinders, whose correctness I had already many occasions to admire. An abundance of shells of the helix tribe (Helix bulimus) was found on the top and sides of the hill; and a calcareous substance was observed protruding from the ground in every part, as noticed both by Vancouver and Flinders;* the former also found it on the bare sandy summit of Bald Head, and supposed it to be coral, a circumstance from which he inferred that the level of the ocean must have sunk. Similar substances have since been discovered by Dr. Clarke Abel, near Simon's Town, at the Cape of Good Hope, and are described by him to be vegetables impregnated with carbonate of lime; but from the specimens we obtained, it would appear that it is neither coral, nor a petrified vegetable substance, but merely sand agglutinated by calcareous matter**. (*Footnote. Vancouver volume 1 page 49. Flinders volume 1 page 63.) (**Footnote. Vide Appendix, C.) January 21. The next morning we got under weigh, and stood over to the entrance of Oyster Harbour, off which we anchored to examine the bar; after satisfying myself on this head, and choosing a spot within the entrance to anchor at, we got under-sail, and in crossing the bar had not less than thirteen feet and a half, being nearly about the time of high water; but between the heads of the harbour it deepened to five, seven, and eight fathoms. Our anchorage was about twenty-five yards from the eastern shore, and not more than fifty yards within the narrowest part of the entrance; it was convenient for our purposes, as the wood was abundantly procured close to our water-holes, which were dug at the edge of the sand, within thirty yards of the vessel; so that the people employed in these occupations could be protected against the natives by the proximity of the cutter, without preventing the necessary repairs to the rigging being carried on at the same time by the remainder of the crew on board. January 21 to 31.