530 Sixteenth Memoir on the Law of Storms. [June, 



the gale before midnight and had to cut away her mainmast on the 30th 

 at 1 p. m. close to, but to the West of the centre, we may say with 

 much probability that the two were the same storm, and that like the 

 Orient's it was moving slowly down, to the South a little Easterly, with- 

 out increasing much if at all in size. 



On the 30th March, we have the Orient with the wind veering to 

 N. W. and moderating to noon, when it became fine, hence we conclude 

 that her storm had either broken up or moved away from her ; and I 

 have thus marked no circle for it on this day. The Dusquesne and 

 Duncan had also both fine weather on this day. 



We have thus only the Loo Choo's hurricane dismasting her with 

 the wind about South, and the Maria Somes with her part of it sub- 

 siding rapidly and the Barometer rising fast. Having also her Latitude 

 for this day and the Loo Choo's position well determined we are enabled 

 to say with tolerable certainty that the diameter of the Maria Somes' 

 hurricane did not much exceed 120 miles, which is that which I have 

 assigned to it on this day, and it must either have been of small extent 

 or moving very rapidly,* for at 5 p. m. it was quite moderate with her. 

 The rates at which these different storms travelled appears to have 

 been as follows : — 



Orient 's Hurricane 



for the 24 hours. Per hour. 



f 25th to 26th,., 15^? 



26th to 27th, W. S. W 64 miles, 2.7 



27th to 28th, S.W.b.S.|S. 74 3.0 



28th to 29th, S. b. W. f W. . 130 5.5 



Grand Dusquesne' s Hurricane. 



2/th to 28th, S. W. b.W.|W. 122 5.0 



28th to 29th, S. b. W. ± W. . 108 4.5 



Maria Sotnes' Hurricane. 



28th to 29th, S.b.f.jW.. 42 1.8 



29th to 30th, S. b. W 102 4.5 



The mean track of the three storms is S. W. \ S. and their mean 

 rate of travelling excluding the first day of the Orient's storm 3.9 miles 

 per hour. 



* Or contracting 1 , or lifting tip which there is reason to suppose may be different 

 modes by which hurricanes terminate. Suitor's Horn Book, p. 261. 

 t Uncertain. 



