58 
A VOYAGE TO 
[ East Coast. 
isos. Captain Cook specifies the situation of Thirsty Sound to be in 
Tuesday T. latitude 22° I o', longitude 149 0 42' ( Hawkcsworth, III, 128) ; but in 
the chart published by Mr. Dalrymple, it is 22 0 7' and i49°36', 
which agrees nearer with the deductions of Mr. Wales ( Astron. Obs. 
p. 135). In either case it appears, that my longitude was getting 
more eastward from captain Cook as we advanced further along 
the coast. 
Wednes. 8. The tides in Thirsty Sound were neaped at this time, and the rise, 
judging by the lead line, was from ten to twelve feet ; but captain 
Cook says, “ at spring tides the water does not rise less than sixteen 
“ or eighteen feet,” which I have no doubt is correct. It ceases at ten 
hours and three quarters after the moon passes over and under the 
meridian. 
On quitting Thirsty Sound we steered north-westward, to pass 
round a chain of rocks extending six miles out from Pier Head, and 
behind which there was a bight in Long Island, with some appearance 
of an opening. It was my intention to examine Broad Sound up to 
the furthest navigable part, and we hauled up between the north 
point of Long Island and a cluster of small isles lying three miles to 
the north-west ; but finding the water too shallow, and that it would 
be more advantageous to begin the examination on the west side, I 
desired Mr. Murray to lead round the North-point Isles and across the 
sound. A small reef lies betwen four and five miles N. E. by E. 
from the largest and easternmost of these isles ; it is covered at half 
tide, and therefore dangerous, but we had 7 to 8 fathoms at less than 
a mile distance, on the inside. 
At noon, the depth was 8 fathoms, the largest North-point 
Isle, which is nearly separated into two, was distant four miles, and 
our situation was as under : 
Latitude observed to the north, 
Pier Head top, bore - - 
Northumberland Island, peak marked h. 
North-point I., westernmost, highest part, - 
21 0 56' 17" 
S. 38 E. 
N. 15 W. 
S. 56 w. 
, largest, 
S. 37 to 16' W. 
In steering W. by N., rippling water was seen a-head at one 
