72 
A VOYAGE TO 
[South Coast. 
1802. including myself, that the night tide rose considerably higher than 
muary. t ^ at ^ ^ e ^ which is conformable to our observations in King 
George's Sound ; but with this difference, that in the day we had 
scarcely any tide at all. 
The base line for my survey of the Sound was of 2,46 geogra- 
phic miles, measured round the curve of the long beach between 
the two harbours. The other stations whence bearings were taken 
with the theodolite, were, — in the Sound, four; at the entrance of, 
and within Princess-Royal Harbour, three ; and in Oyster Harbour, 
four; at each of which, a point with a circle is marked in the plan. 
The soundings were either taken in the ship, with simultaneous cross 
bearings, or in boats, generally accompanied with notices of known 
objects in a line, or the angles between them taken with a sextant. 
There are many small, but no very essential differences be-^ 
tween my plan and that of captain Vancouver. The most important 
to navigation, is that in the soundings going into Oyster Harbour : 
I could find only thirteen feet over the bar, whereas he marked 
seventeen ; a difference, however, which may not improbably have 
taken place between 1791 and 1801. 
