272 



HYDROGRAPHY. 



The island is elevated about 10 feet above the level of the sea. It is 

 31 miles long, in a northwest-by-west direction, and li wide, and 

 entirely covered with groves of cocoanut and other trees. Off its 

 eastern end, a reef extends half a mile, and there is a ledge off its 

 western end, which extends 2 miles, the water on^ which appears 

 much discolored, bat the sea was not seen to break. This island 

 was placed by the Peacock in latitude 4° 41' 35" north, and longitude 

 160° 15' 37" west. The surf was too heavy to admit of landing, and 

 there is no anchorage. The current off this island was found to set 

 to the northeast. As there were many islands reported to exist in 

 this neighborhood, the sea to the westward was searched thoroughly, 

 but none were found. Captain Hudson expresses himself well satisfied 

 that no island but Washington Island exists thereabouts. 



COPPER ISLAND. 



Copper Island rests upon doubtful authority. In our passage from 

 California to the Sandwich Islands it was impossible to run over its 

 supposed position, in latitude 20° 0G' north, and longitude 131° 54' 

 west. I have thought proper to retain it on the charts, until its 

 position shall have been examined. 



COOPER ISLAND. 



From the similarity of the name of Copper and Cooper, I am in- 

 duced to believe that this latter may have been one and the same 

 with the foregoing, but its latitude differs some 5° farther to the north. 

 The situation assigned Cooper Island is in latitude 25° 24' north, and 

 longitude 131° 26' west. It is to be desired that the position of this 

 island should likewise be searched for in east longitude, where I am 

 inclined to believe, if it exists, it will be found, as there are many 

 others lying in the same latitude, and agreeing nearly in longitude. 



SPACE BETWEEN LATITUDE 16° AND 18° NORTH, AND LONGITUDE 130° AND 140° WEST. 



Many navigators have believed that there are islands existing 

 within the above designated space, and several expeditions have sought 



