1082 A Seventh Memoir* on the Law of Storms in India. [No. 131. 



fully shews. At Kedgeree also by sunset, the gale was N., " blowing 

 hard/' and at 9 p. m. a hard gale, steady at N. 



The Coleroon's log will give us the nearest approximation to the 

 place of the centre of the Calcutta storm at noon this-day. This vessel, 

 lying at anchor close to the Beacon, parted at 2 a. m., and stood to 

 sea to the S. E. with the wind at E. N. E. heaving to probably, about 

 30 miles to the S. E. of the Beacon, where she had the wind at North 

 at noon, and the Beacon had it at N. E. This would give about 

 an E. by N. or E. N. E. wind at Calcutta, but as the gale there 

 moderated greatly from noon towards evening, we may suppose its 

 true circumference to have scarcely reached that city at this time, or at 

 most, that this was but the exterior of it, as at False Point, which place 

 is about as far to the West of this spot as Calcutta is to the North of 

 it. To seaward, i. e. to the S. Eastward and Southward also, the 

 circumference cannot fairly be said to extend to the radius which 

 it would require (140 miles) to include Calcutta. At Burrisal, to the 

 N. N. E. of this centre, they had an Easterly gale with rain, which 

 is what should occur on the N. E. quadrant of these storms, with 

 moreover the effect of the deflected S. W. monsoon from the Ara- 

 can coast which must be allowed for. 



The point, thus, for the centre of the Calcutta storm at noon on the 

 2d June, may not unfairly be taken as in latitude 20° 30' N., longitude 

 82° 20' E.; and as the centre passed over Calcutta at, say 2-30 p. m. 

 on the following day, and the distance between these two spots is 

 140 miles, this will give 140 miles in 26| hours, or a rate of 5.3 miles 

 per hour for the track of the storm upon a N. N. W. course,* taking 

 it to have followed a strait line ; and measuring back on this line, the 

 distance travelled over from noon to 2h. 30m. p. m., we have the point 

 which I have marked, 12| miles S. S. E. of Calcutta, for the place of 

 the centre on the 3d June at noon. 



It will be noticed by the table, that just at the time of the gale 

 and shift of wind at Calcutta on the 3rd, the same phenomenon took 

 place at Midnapore, which is 70 miles to the W. b. S. This requires 

 a separate consideration. The first supposition is, that the calm space 

 of the storm might be as much as 70 miles in breadth (?) but this con- 



* My newspaper estimate says, about aNWbW. course. This was judged of by the 

 shift of wind, as well, as that could be ascertained, in the middle of a town. 



