XX 
DESCRIPTION OF PLATES. 
Fig. 5. — New Caledonia, in the western part of the Pacific ; from 
Krusenstem's atlas, compiled from several surveys ; I have 
slightly altered the northern point of the reef, in accordance 
with the atlas of the Voyage of the Astrolabe. In Krusenstem’s 
atlas, the reef is represented by a single line with crosses ; I have 
for the sake of uniformity added an interior line ; scale ~ of an 
inch to a mile. 
Fig. G. — Maldiva Archipelago, in the Indian Ocean ; from the survey 
by Capt. Moresby and Lieut. Powell; scale ■— of an inch to a 
mile. 
PLATE III. at beginning of Volume. 
The principles on which this map is coloured are explained in the 
beginning of Chapter VI. ; and the authorities for colouring each 
particular spot are detailed in the Appendix. The names printed 
in italics in the Index refer to the Appendix. 
