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APPENDIX. 
come within the barrier class, and be coloured blue ; but I 
have been forced to leave them uncoloured. — The last- 
mentioned groups are connected with the east end of Ceram 
by a chain of small islands, of which the small groups of 
Ceram-laut, Goram, and Keffing are surrounded by very 
extensive reefs, projecting into deep water, which, as in the 
last case, I strongly suspect belong to the barrier class ; 
but I have not coloured them. From the south side of 
Keffing, the reefs project five miles (Windsor Earl’s Sailing 
Direct, for the Arafura Sea, p. 9). 
Ceram. — In various charts which I have examined, 
several parts of the coast are represented as fringed by 
reefs .—Hanipa Island, between Ceram and Bourou, in an 
old MS. chart in the Admiralty, is fringed by a very irregu- 
lar reef, partly dry at low water, which I do not doubt is 
of coral formation ; both islands coloured red. — Bourou: 
parts of this island appear fringed by coral-reefs, namely, 
the eastern coast as seen in Freycinet’s chart ; and Cajeli 
Bay, which is said by Horsburgh (vol. ii. p. 630) to be 
lined by coral-reefs, that stretch out a little way, and have 
only a few feet of water on them. In several charts, 
portions of the islands forming the Amboina Group 1 are 
fringed by reefs ; for instance, Noessa, Harenca, and 
Ucaster, in Freycinet’s charts. The above-mentioned 
islands have been coloured red, although the evidence is 
not very satisfactory. — North of Bourou the parallel line 
of the Xulla Isles extends : I have not been able to find 
out anything about them, excepting that Horsburgh (vol. 
ii. p. 543) says that the northern shore is surrounded by a 
reef at the distance of two or three miles ; uncoloured. — 
Mysol Group : the Ivanary Islands are said by Forrest 
(Voyage, p. 130) to be divided from each other by deep 
1 [At Amboina coral-reef rock occurs raised many hundred feet 
above sea level, forming a steep bill slope. Narrative of Challenger 
Voyage, vol. i. p. 580. Seealso Moseley, Notes by a Naturalist, p. 389.] 
