P. 222.
[6] The large claws or pincers of some of these crabs are most
beautifully adapted, when drawn back, to form an operculum to
the shell, nearly as perfect as the proper one originally
belonging to the molluscous animal. I was assured, and as far as
my observations went I found it so, that certain species of the
hermit-crab always use certain species of shells.
[7] Some natives carried by Kotzebue to Kamtschatka collected
stones to take back to their country.
[8] See Proceedings of Zoological Society, 1832, p. 17.
[9] Tyerman and Bennett. Voyage, etc. vol. ii. p. 33.
[10] I exclude, of course, some soil which has been imported
here in vessels from Malacca and Java, and likewise, some small
fragments of pumice, drifted here by the waves. The one block of
greenstone, moreover, on the northern island must be excepted.
[11] These were first read before the Geological Society in May,
1837, and have since been developed in a separate volume on the
"Structure and Distribution of Coral Reefs."
[12] It is remarkable that Mr. Lyell, even in the first edition
of his "Principles of Geology," inferred that the amount of
subsidence in the Pacific must have exceeded that of elevation,
from the area of land being very small relatively to the agents
there tending to form it, namely, the growth of coral and
volcanic action.
[13] It has been highly satisfactory to me to find the following
passage in a pamphlet by Mr. Couthouy, one of the naturalists in
the great Antarctic Expedition of the United States:
![The Voyage Of The Beagle By Charles Darwin
-
[5] Kotzebue's First Voyage, vol. iii. p. 222.
[6] The large claws or pincers of some of these crabs are - Page 739](../images/travel.jpg)
