THE BRITISH ISLANDS IN NOVEMBER 1838. 



477 



Table arranging Places where the Barometer stood at equal heights^ or nearly so, during the Storm of 28th and 



29th November 1838. 



1 



2 



3 



4 



5 



Paris Observatory, 29.04 



London (R. Soc.) 28.68 



(Fleet St.) 28.70 



Greenwich Observ. 28.67 

 Farnborough, 28.70 



Wisbeach . 28.54 

 Startpoint (Orkney) 28.44 



Falmouth . 28.30 

 Aberavon . 28.38 

 Cardiff . 28.39 



Liverpool . 28.15 

 Applegarth (Dumf.) 28.12 

 Isle of May L. H. 28.16 

 Bell Rock L. H. 28.17 

 Kinnaird-head 28,12 



Means = 28.49 

 Range := .10 



Means = 28.35 

 Range = .09 



Means = 28.69 

 Range — .03 



Means = 28.14 

 Range = .06 



6 



7 



8 



9 



10 



BoDJedward, 28.08 

 Abbey St Bathan's, 28.08 

 Buchanness L. H. 28.10 



Ettrick School 28.00 

 Edlnb. College 27.99 



Observat. 28.02 



Kinfauns . 28.06 

 Girdleness L. H. 28.04 

 Tarbetness L. H. 27.99 



Isle of Man . 27.97 

 Catrine (Ayrsh.) 27.89 

 Corsewall L. H. 27.95 

 Glasgow Observ. 27.94 

 Loch Lomond . 27.91 

 Lismore L. H. 27.93 

 Kingussie . 27.91 

 Dunnethead . 28.00 



Dublin . 27.60 

 Barra L. H. . 27.80 

 Rhins of Islay 27.79 

 Cape Wrath L. H. 27.77 



Coloony (Sligo) 27.66 

 A dare Abbey 27.49 



Means = 27.62 

 Range =: .06 



Means = 28.08 

 Range = .04 



Means = 27.69 

 Range = .20 



Depression. 

 At Paris . 29.04 

 ... Adare . 27.49 



Means = 28.01 

 Range = .06 



Means = 27.94 

 Range =: .11 



Difference =i 1.66 



In this table, the places where the lowest depression of the barometer was 

 observed, have been so arranged, as to group together those where the barometer 

 stood at the same height, or very nearly so. The height of the barometer has, 

 in this table, been reduced to the level of high-water mark, as well as in most 

 instances to the temperature of 32°. There is every reason to believe, that the 

 observations at all the places, except at the lighthouses, indicate the lowest point 

 which the barometer reached. At the lighthouses, the statement is given in the 

 returns only at intervals of twelve hours, — viz. 9 a. m. and 9 p. m. The depres- 

 sion in all of these returns is therefore a little too high. But the error in those 

 used in the above table, will hardly exceed 1-1 0th. 



On examining the above table, it will be seen, that the places arranged as 

 now explained, lie in lines or narrow bands, which traverse the British islands in 

 a north or N.NE. direction, — that all the bands are parallel, or nearly so, — and 

 that in each band, the depression becomes greater towards the west. 



I think, therefore, that the barometrical observations confirm very strongly 

 the inference, drawn from other data, that the most violent part of this storm was 

 situated very considerably to the west of the British islands, and that the storm 

 travelled in a N.NE. direction. 



The next observations to be noticed, have a special bearing on the magnitude 



