- 
J.D. Dana on Changes of Level in the Pacific Ocean, 173 
served. On the northeast side of Nanouki there was a hill twenty 
or thirty feet in height covered with trees; but we 
means of learning that it was not artificial. We were, however, 
_ Informed by Kirby, a sailor taken from Kuria, that the reef of 
Apamama was elevated precisely like that of Apia, to a height 
of five feet; and this was confirmed by Lieutenant Dehaven, 
Who was engaged in the survey of the reef. We were told, also, 
that Kuria and Nanouki were similar in having the reef elevated 
though to a less extent. It would hence appear that the eleva- 
tions in the group increase to the northward. 
Maral, to the north of Apia, is wooded throughout. We 
sailed around it without landing, and can only say that it has 
bably been uplifted like the islands south. Makin, the north- 
érnmost island, presented in the distant view no certain evidence 
of elevation. a 
The elevation of the Kingsmills accounts for the long conti- 
huity of the wooded lines of land, an unusual fact considering 
the size of the islands, The amount of fresh water obtained 
fom springs is also uncommon. (xii, 48.) The wear from storms 
would also be greater on islands which have. been elevated. 
m. Radack, Ralick and Caroline Islands.—No evidences of 
elevation in these groupsare yet known. The very small amount 
of wooded land on the Pescadores inclines us to suspect rather a 
Subsidence than an elevation ; and the same fact might be gath- 
ered with regard to some of the islands south, from the charts of 
Kotzebue and Kruesenstern. 
n. Ladrones.—The seventeen islands which constitute this 
stoup, may all have undergone elevations within a recent period, 
but OWing to the absence of coral from the northern, we have ev1- 
dence only with regard to the more southern. : 
. Jam, according to Quoy and Gaymard, has coral rock upon 
de hills more than siz hundred feet (one hundred toises) above 
he sea. 
‘ Rota, the next island north, afforded these authors similar facts, 
indicating the same amount of elevation. 
0. Pelews and neighboring Islands—The island F'eis, three 
hu miles southwest of Guam, is stated by Darwin, on the 
authority of Lutke, to be of coral, and ninety feet high. Mac- 
“enzie Island, seventy-five miles south of Feis, is a low atoll, as 
i, tained by the Expedition. No evidences of elevation are 
Known to occur at the Pelews. _ 
Melanesia nds.—Among the New Hebride; , New Cale- 
donia, Salomon Islands, the evidences of elevation have not yet 
been examined, 
table tea given on the preceding pages are presented in . 
on the next page. 
Senres, Vol. XV, No. 44,—March, 1853. 28 
