636 APPENDIX. 



and at that season visit Swan River and King Georges 

 Sound, for refreshments ; but during the winter months they 

 are rarely to the southward of Sharks' Bay ; numbers are to 

 be met off the N.W. Cape. 



Between the parallels of 40° and 45° they meet much bad 

 weather, as it is generally blowing strong with a heavy sea ; 

 but between 45° and 50" the weather is much more settled, 

 and finer. November is said to be generally the finest of the 

 summer months, the winds are mostly moderate, and the 

 weather more settled than at other periods. 



Two gales that were experienced by the Beagle in No- 

 vember 1837, between the islands of St. Paul and Amsterdam 

 and Swan River, will serve to shew the different effects upon 

 the barometer by gales from opposite quarters, one being 

 from N.W. and the other from S.E. 



On November the 1st, the barometer stood at 29.90, having 

 been gradually rising for some days previous to that, and the 

 wind had been fresh between north and west. After 8 p. m. 

 on the 1st, the mercury began to fall, and on the 2nd, the 

 wind was strong from N.N.W. — barometer falling all day. 

 During the night it blew a heavy gale, and the barometer fell 

 to 29.34. On the morning of the 3rd the wind veered to the 

 westward, and the mercury began to rise, the weather also 

 became more moderate, and gradually fine. 



On the 8th of the same month, the barometer was 30.05 at 

 8 p. M. with fine weather, wind S.E. by E,, it thencommenced 

 to fall, and at 8 p.m. on the 9th was 29.80, and blowing a 

 heavy gale at S.E., which continued all night, and until 

 8 p.m. on the 10th, at which time it became more moderate, 

 and the barometer began to rise. 



What a different effect these gales had on the barometer ; — 

 that from the N.W. causing the mercury to fall nearly 

 6-tenths, whereas, the last, from S.E. only lowered it 2-tenths, 

 and 5-hundredths ; they were of equal strength and dura- 

 tion, and both accompanied by heavy rain. 



