EAST-INDIAN ARCHIPELAGO. 
239 
36' N.) ; a ccralreef fronts this place, and projects into the 
sea nearly a quarter of a mile (Notices of the Indian Archi- 
pelago, published at Singapore, p. 105). — Pulo Brassa (5° 
46' N.) : a reef surrounds it at a cable’s length (Horsburgh, 
vol. ii. p. 60). I have coloured all the above specified points 
red. I may here add, that both Horsburgh and Mr. Moor 
(in the Notices just alluded to) frequently speak of the 
numerous reefs and banks of coral on the west coast of 
Sumatra ; but they nowhere have the structure of a barrier- 
reef, and Marsden (History of Sumatra) states that where 
the coast is flat, the fringing-reefs extend far from it. The 
northern and southern points, and the greater part of the 
east coast, are low, and faced with mud banks, and there- 
fore without coral. 
Nicobab Islands. — The chart represents the islands 
of this group as fringed by reefs. With regard to Great 
Nicobar, Captain Moresby informs me that it is fringed by 
reefs of coral, extending between 200 and 300 yards from 
the shore. The Northern Nicobars appear so regularly 
fringed in the published charts, that I have no doubt the 
reefs are of coral. This group, therefore, is coloured red. 
Andaman Islands. — From an examination of the MS. 
chart, on a large scale, of these islands, by Captain Arch. 
Blair, in the Admiralty, several portions of the coast appear 
fringed ; and as Horsburgh speaks of coral-reefs being 
numerous in the vicinity of these islands, I should have 
coloured them red, had not some expressions in a paper in 
the Asiatic Researches (vol. iv. p. 402) led me to doubt the 
;xistence of reefs ; uncoloured. 
The coast of Malacca, Tanasserim, and the coasts 
northward, appear in the greater part to be low and muddy : 
where reefs occur, as in parts of Malacca Straits, and near 
Singapore, they are of the fringing kind ; but the water is 
so shoal, that I have not coloured them. In the sea, how- 
ever, between Malacca and the west coast of Borneo, where 
