Note 383 — GEOLOGICAL ILLUSTRATIONS, (continued 2)
Reading edition
On glancing over the charts of Kotzebue’s voyage, we are struck at seeing several of these islands grouped in a circular form, connected with one another by reefs which appear to consist of madrepores, and to present, by this arrangement, a small internal sea of great depth, to which an entrance is afforded by one or more openings. May not this arrangement be owing to submarine craters, on the edge of which the lithophytes have erected their habitations?