BOTTOM DEPOSITS IN THE LAGOONS. 153 



At anchor off Nalandu (Miladummadulu), in twenty-four fathoms, the 

 bottom consisting of coarse coral sand and sponges. 



At anchor off Hanimadu (Tiladummati), in sixteen fathoms, many speci- 

 mens of Asymmetron came up in the dredge from a Coralline bottom. Mr. 

 Gardiner 1 collected his specimens mainly on sandy bottoms exposed to 

 currents. We collected Asymmetron lucayanum (Andrews) in abundance in 

 the sand of some of the northern groups in twenty to thirty fathoms. 



At anchor off Kuludu (Miladummadulu), in twenty-three fathoms, we 

 found a bottom of coarse coral sand and broken shells. 



Off Turadu, in thirty fathoms, the bottom of Ari is composed of broken 

 corals and shells and coral sand. 



At our anchorage inside Ariadu, in thirty fathoms, we found the bottom 

 to consist of coarse fragments of coral. 



At anchor off Buri Hura, in twenty-six fathoms, the bottom consisted of 

 fine sticky bluish coral sand. 



The bottom near the southern horn of Mulaku, in thirty-four fathoms, 

 was made up of very fine coral sand. This part of the group is not sheltered 

 by a land rim, the sea can sweep across the rirn flats ; we find the bottom 

 often consists of a fine sticky ooze, such as we find in similar conditions .in 

 Pacific atolls. 



The bottom of Kolumadulu, off Timarafuri, in twenty-nine fathoms, is 

 hard, consisting mainly of large pieces of broken corals. 



At anchor off Kandudu (Kolumadulu), in twenty-four fathoms, we found 

 a bottom of coarse coral sand with a few broken shells. 



The bottom at the south end of Haddummati, off Funadu, in twenty- 

 seven fathoms, consisted of fine coral sand, somewhat sticky, and broken 

 shells. At anchor near our former anchorage, off Funadu, at the south end 

 of Haddummati, we obtained in twenty-eight fathoms a bottom composed of 

 Nullipores and Corallines. 



The bottom off Mafuri anchorage (Suvadiva), in twelve fathoms, con- 

 sisted of coarse coral sand, rather sticky, and broken shells. 



The bottom at anchor off Dandu (Suvadiva), in twenty-four fathoms, 

 was hard, covered with Corallines and Algae. 



1 Loc. cit., p. 359. 



