476 MR MILNE ON TWO STORMS WHICH SWEPT OVER 



sion in the south of England, and the greatest depression in Perthshire, — so that 

 it was propagated in a northerly direction, at the rate of about sixteen miles an 

 hour. 



As to the period when the storm ceased, I have mentioned that it was in the 

 forenoon, or rather in the morning of the 30th, in the south of England. It seems 

 to have ceased in the evening of that day, in the south of Scotland, When it 

 ended in the west and north-west coast of Ireland, the wind was blowing from 

 about W.NW. But in England and Scotland, it was then blowing from the 

 west, or a point to the south of west. This difference in the direction of the 

 wind, at different places, is not only consistent with the theory of rotation, but is 

 an important confirmation of it. For if the centre of the stormy circle passed to 

 the west of the British islands, then it would be a segment only of the circle 

 which swept over them, and, in that case, the wind would not, at the end of the 

 storm, blow in a direction exactly opposite to that with which it began. At Holy- 

 head, Liverpool, Applegarth (Dumfriesshire), and Catrine works (Ayrshire), the 

 storm ended with the wind at SW. or W.SW. At Limerick it was W. by N. At 

 Barrahead (one of the Hebrides), and at Lismore (off the coast of Argyleshire), 

 it varied from W. by N. to W.NW., so that these last-mentioned places were pro- 

 bably not far from the storm's centre, which nowhere, however, impinged on the 

 British islands. 



If this view of the matter were correct, viz. that the centre of the stormy 

 circle was to the west of the British islands, it is evident that the veering ought 

 to have been more rapid on the west coast of Ireland, than in places situated more 

 to the eastward ; and farther, that the same angle of veering should have re- 

 quired a longer period. This inference is fully confirmed by the registers. At 

 Adare Abbey, where the direction of the wind was carefully observed, and re- 

 gistered every half hour, the wind veered 133° in twenty-four hom-s. At Penzance, 

 during the same period, the wind veered 112°; at Fairnborough, 73°; at the 

 Greenwich Observatory, 79° ; at Rhins of Islay, on the south-west coast of Scot- 

 land, 67° ; at Kinfauns, 90° ; at Paris only 35°. 



It farther appears that, on the west coast of Ireland, the storm passed awav 

 much more quickly, than in places situated farther eastward. At Limerick, it 

 does not seem to have continued longer than twenty-eight and a half hours ; — 

 in London and its neighbourhood, it lasted fully two days ; — in Paris, three days. 



There is still another test of the correctness of the above view, which is 

 available. If the most violent part of the stormy circle, lay to the west of the 

 British islands, the depression of the barometer ought, during the storm, to have 

 been greatest in places situated to the west. This inference is also remarkably 

 confirmed by the fact, as the following table shews. 



