AI^ALYSIS OF THE SOUNDINGS TAKEN BY THE "AMRA." 



27 



Mr. Gardiner also found thirty-five fathoms' greater depth than is indi- 

 cated on the Admiralty Chart in the channel between North and South 

 Nilandu. His soundings across the North and South Wataru channels 

 are a few fathoms less than those obtained by the "Amra," as are also his 

 soundings across Wadu Channel. 



Mr. Gardiner's soundings acro.ss Ariyaddu Channel are well to the east- 

 ward of the central line of the channel. They are parallel but to the west- 

 ward of the axis of the central basin. His lines from the centre of Ari to 

 Wadu Channel, across the central basin, and a southern line from Felidu to 

 North Nilandu, do not indicate any difference in the topography of the 

 southern central basins from that shown by the lines of soundings taken 

 by the "Amra." There are a few discrepancies between the soundings 

 as indicated on his chart, Plate X., and the text, but they are not of 

 importance. 



Lucas Sounding Machine. 



