COASTS OF AUSTRALIA. 
55 
under sail, but, the breeze being light, had only i82i. 
time to reach the anchorage under Greville Aug. i, 
Island in Half-way Bay, before the tide turned 
against us. It was purposed to remain only 
during the flood ; but, on examination, the place 
was found to be so well adapted for the pur- 
pose of procuring some lunar distances with the 
sun, to correspond with those taken last year 
at Careening Bay, that we determined upon 
seizing the opportunity ; and, as wood was abun- 
dant on the island and growing close to the 
shores, a party was formed to complete our 
holds with fuel, whilst Mr. Roe assisted me in 
taking observations upon a convenient station on 
the north point of the bay within Lammas 
Island, a small rocky islet covered with shrubs, 
and separated from the easternmost point of 
Greville Island by a very shoal and rocky 
channel. 
During these occupations we examined Mun- 
ster Water: on our way to it we landed on the 
reef off the east end of the Midway Isles, which 
was found to be more extensive than had been 
suspected, and to embrace the group of small 
rocks, which at high-water only just shew their 
summits above the water ; at high-tide there is 
at least fifteen feet water over it, but being low- 
water when we landed, the reef was dry. Upon 
