ELEVATIONS IN CORAL PACIFIC REGIONS. 381 
riod, but owing to the absence of coral from the northern, we 
have evidence only with regard to the more southern, 
Guam, according to Quoy and Gaymard, has coral rock upon 
its hills more than six hundred feet (one hundred toises) above 
the sea. 
Rota, the next island north, afforded these authors similar 
facts, indicating the same amount of elevation. 
n. Pelews, and neaghboring Islands.—The island Feis, three 
hundred miles southwest of Guam, of the Ladrone Islands, is. 
stated by Darwin, on the authority of Lutke, to be of coral, 
and ninety feet high. Mackenzie Island, seventy-five miles 
south of Feis, is a low atoll, as ascertained by the Wilkes 
Expedition. In the Pelews elevated reefs occur at various 
heights up to 500 feet, according to Prof. Semper. The most 
of the islands of the southern half of the group are coral 
islands. and are more or less elevated. In Pelelew, the west- 
ern coral cliffs are 250 feet high; the eastern 80 feet. 
0. Melanesian Islands. — 
New Hebrides. — ‘“‘ Much coral at a great altitude,” ac- 
cording to G. Bennett, as reported by Darwin. 
Loyalty Islands. — One of the islands is wholly of coral, 
and is elevated 250 feet, according to Rev. W. B. Clarke, of 
Sydney, in the Journal of the Geological Society, 1847, p. 61. 
Bonin Group. — Peel Island has coral reefs raised 50 feet 
above tide-level, according to P. W. Graves, in the Journal of 
the Geological Society, 1855, p. 552. 
Solomon Islands. — According to Dr. Guppy, there are 
elevated coral reefs, varying in height from 100 to 1,200 feet. 
On St. Christoval, coral occurs to a height not exceeding 500 
feet. 
The details given on the preceding pages are here pre- 
sented in a tabular form. 
