1(T^ MARINE BAROMETER. 



Obser^rations ''^'*' North-eastwardly winds, off the land, were the next 



and inferences that prevailed ; they were light, and accompanied with 



lLTo7r«pon. ^^^^*^y weather and spitting rain. The mercury fell to 29,70, 



dent changes and remained there till the wind shifted to the west and 



weaThetTo^be ^^"^^'^^^^'^J '^hen it began to rise, and in two days was up 



expected after ^o 30,42. At that time we were off the projection marked 



chaiige in the 11. in the chart, in 139|o east longitude ; the wind had then 



Seterr ^'"^^' ''^^^^^ *° *^^ south-eastward along the shore, with a steady 



breeze, and the mercury remained nearly stationary so long 



as it lasted ; but on the Avind dying oft", and flawing from one 



side to tlie other, it descended quickly to* 30 inches. A 



breeze then sprung up at NW, which, within twenty-four 



hours, shifted suddenly to SW, and blew a gale which had 



near proved fatal to us. It was accompanied with rain and 



Tory thick weather, and lasted two days ; by which time, 



the mercury had descended to 29,58. 



Sth. In Bass' Strait, for several days in the month of 

 April, the mercury stood above 30,40 with the wind from 

 the south and eastward, sometimes blowing fresh : the 

 weather generally fine. It then fell half an inch in eight 

 hours, and a wind set in soon after from the north-westward 

 which continued four days, blowing moderately, with 

 cloudy weather, and sometimes a shower of rain ; the mer- 

 cury remaining stationary between 29,83 and 29,89. On 

 this second wind dying away, a strong breeze sprung up 

 which fixed at WSW with squally weather ; but for three 

 V days no alteration took place in the barometer, until the 

 wind shifted to NW and north, and the mercury then 

 descended to 29,52, though the weather was finer, and wind 

 more moderate than before. 



9/^. Passing along the south coast of Australia the 

 second time, we experienced light winds from the sea for 

 forty hours in D'Entrecasteaux's Archipelago, in the month 

 of May : they were variable between WSW and SSE with 

 dull cloudy weather, and the mercury stood very high, 

 btjing up to 30,50 most of the time. The wind then came 

 round to N by E and NNW ; previously to which, the 

 mercury began to descend, and it kept falling for two days 

 till it reached 30,1 9, though the weather was not so cloudy 

 as before, and the wind was equally light. On the wind 

 veering to west and WSW the mercury rose to ^0,25 ; but 



it 



