“The only plant[14] seen, grew in considerable quantities in the lagoon, which I pulled out of the water, where it was growing. There is nothing but a coral platform, coral clinker and coral sand. We found nothing to detain us and left the island on the afternoon of the day on which we landed.”
Mr. Darwin, on his remarks on the geographical distribution of reef-building corals, states that he could find no evidence of their living on or near the west coast of America, and consequently discredits the statement made by Sir Edward Belcher; for after examining a Ms. chart of Clipperton Rock, at the Admiralty Office, drawn by Sir Edward, came to the conclusion that it was more of the shape of a crater. The Island is, however, a true Atoll and has been elevated at least 100 feet.
It must have been closed since 1839, and the freshening of the water has probably been caused by rain.
We may also add, that it stands within the limits of reef building corals, as deduced by Mr. Dana, from tables of the temperature of the sea, and consequently is confirmatory of his opinion.
We might add other facts in support of Mr. Dana’s theory, but from other parts of the Pacific.
[11] Lieut. Griswold was killed at the head of his regiment, gallantly leading them into action, at the battle of Antietam.
[12] A narrative of four voyages to the South Seas, &c., by Capt. Benj. Morrell. N. Y., 1832, page 219.
[13] Narrative of a voyage round the world in H. M. S. Sulphur, by Capt. Sir Edward Belcher. London, 1843. Vol. II, page 219.
[14] Specimens of the plant referred to by Mr. Pease, were received by the Academy.
Discussion as to the adaptation of certain semi-tropical plants to the climate of California.