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AGASSIZ: FIJI ISLANDS AND CORAL REEFS. 97 
2 Naitamba. 
Plate 19. 
The cliffs of the southeast side of Naitamba consist of voleanic con- 
glomerates or puddingstone, which extend along the highest points of 
the ridge on that side of the island. But on the northern side of the 
island the ridge, rising to a height of over 100 feet, is clearly seen to 
NAITAMBA, FROM THE EAST. 
be composed of elevated limestone. Naitamba is surrounded by a 
narrow lagoon (Plate 19), which is a little over half a mile wide off 
the north side of the island, where its greatest depth is seven fathoms. 
On the southwest side the lagoon is very shallow and narrow, the reef 
becoming practically a fringing reef. The highest point of Naitamba 
is 910 feet. 
Mothe. 
Plate 22. 
The Mothe group is interesting, consisting of a volcanic island, Mothe, 
and of Karoni, a low island to the south of it, formed by a short ridge 
of elevated limestone rising to a height of 120 feet. An outer reef flat 
surrounds both the islands. It runs at a distance of a little over balfa 
mile from the shore of Mothe itself, which is also surrounded by a very 
narrow fringing reef. In that part ; 
of the lagoon there is only from two We Ama?) 2 
to five fathoms of water, and the: a 
channel is studded with heads. 
The lagoon enclosed by the Mothe Reef is shaped like a boot, the foot 
reaching towards the east and the leg in a northwesterly direction. 
Mothe Island is elliptical in outline. Its greatest diameter, running 
north and south, is about two and a half miles, and it rises to a height 
of 590 feet. There are only boat passages into the lagoon through the 
eastern face. Although these passages are on the eastern face, yet they 
are practically to the lee, owing to the westerly trend of the lagoon and 
VOL. XXXIII. i 
KARONI. 
