1848.] Fifteenth Memoir on the Law of Storms. 47 



from the S. E. to the East. The other ships, Mermaid, Victoria, and 

 Atiet Rohoman from which we have logs on this day, were wholly out 

 of the circle of the vortex. 



For the place of the centre ; it must also have heen "close to the 

 Buckinghamshire, as the rapid veering of the wind from N. E. by N. 

 to West at midnight, or 13 points in 12 hours, shows. Indeed, a pro- 

 jection of her track on a plane chart would make her to have run round 

 the North-western, Western and Southern quadrants of the storm circle, 

 at a distance of perhaps 30 or 40 miles, between noon and midnight, 

 while it was rapidly passing up on a Northerly course ahead of her^ 

 Hence we cannot place it at a greater distance than 50 miles S. W. by 

 S. from the Buckinghamshire '$ position at noon this day, or close to 

 the Island of Minicoy. 



It is very doubtful if the Faize llubany s " moderate gale," though it 

 would agree very well as to the direction of the wind, was any part of 

 the storm on this day ; for if we assume it to be so, we must first take 

 it that the whole storm was of upwards of 480 miles in diameter, and 

 then that it should have been blowing tolerably strong at Alleppee, 

 where the Atiet Rohoman was lying with the wind at E. N. E., (instead 

 of about S. S. E., which this position of the centre requires) ; and though 

 with dark, cloudy, rainy weather, yet with so little wind that she crossed 

 royal yards at 8 a. m., and did not send them down till the evening. 

 This supposed storm circle would also reach the East London at its 

 outer verge, but it would then require the wind to be S. \ W., and 

 about the same strength as with the Faize Ruhany ; whereas it was 

 with the East London, though moderating, still a smart gale from S. 

 W. b. W. We may, it is true, presume that the two ships on the 

 coast were sheltered by the mountains inland, but there was nothing to 

 alter the direction of the wind with the East London, and five points 

 is too great a discrepancy to allow of our considering this ship's storm 

 as part of the Buckinghamshire's. 



I am therefore inclined to take the storm of this day as having just 

 formed, or just travelled up from the Southward, and having a diameter 

 of 100 or 150 miles at most, and that the dark weather and heavy 

 rain of the Atiet Rohoman were the joint effects of the verges of the 

 East London and Buckinghamshire'' s storms, and we may finally remark 

 that if the storm was then of 480 miles in diameter it would probably 



