Note 9 — CORAL RINGS.[5]

Mr Darwin’s Coral Reefs, p. 142. The only supposed exception to this remarkable coincidence, at the time when Mr Darwin wrote, in 1842, was the volcano of Torres Strait, at the northern point of Australia, placed on the borders of an area of subsidence; but it has been since proved that this volcano has no existence. Sir Charles Lyell’s Principles of Geology. 8th edit. p. 767.