324 A Twenty-first Memoir on the Law of Storms. [No. 4. 



very remarkable alternations of lulls and gusts. Her position on this 

 day is unfortunately not given, nor have I the detailed log to calculate 

 it from, nor do the Mary Ann and Joseph Manook give their positions. 

 The Hugh Lindsay also gives no position, but she was steaming out to 

 sea with the wind N. W. and the Hannah, 87' miles South of the 

 Fox, has a hard gale from the West. The Joseph Manook notes in 

 her log a remarkable interval of calm about Noon, which may have 

 been the centre ; but her position is not given from the 1st to the 5th, 

 so that we are quite at a loss to say if she really was at the centre, 

 though with the strong Easterly current she experienced this is not 

 impossible. 



We have then to the N. N. Eastward of the Fox at 120 miles 

 distance, the Catherine Apcar and Ostrich, with increasing gales from 

 E. b. S. and E. N. E. and hard squalls, the first ship bound to Cal- 

 cutta bearing up North to run as fast as possible out of the influence 

 of the Cyclone. The Mary Harrison, 180 miles to the N. N. W. of 

 the Fox and 75 to the Eastward of Madras, having the average of her 

 winds about N. b. W. with squally weather, and at Madras the wind 

 appears to have been variable between N. b. W. and N. N. E. and 

 the weather sufficiently threatening for the ships in the roads to be 

 ordered to sea at daylight. 



These various winds do not give any certain position for the centre 

 on the 3rd, but they establish clearly the existence of a Cyclone of 

 irregularly blowing and vibrating winds, of which the centre must 

 have been close upon the Atalanta and H. M. S. Fox, and upon the 

 average parallel of the Southern group of vessels (Atalanta, Fox, 

 Joseph Manook, Mary Ann and Hugh Lindsay,) and that the Cathe- 

 rine Apcar, Ostrich and Hydrabad were upon its Northern quadrants. 

 The Mary Harrison (taking her position as correct) appears to have 

 had her winds influenced by the shore, where indeed the winds on the 

 approach of this Cyclone forcibly remind us of a Mexican Norte. 



With these considerations, then, I have placed the centre for the 

 3rd May in Lat. 11° 08' N. ; Long. 82° 18' East, which will give it a 

 track of 35 miles only to the N. N. E. in the twenty-four hours, but 

 there is nothing extraordinary in the Cyclone's being so nearly sta- 

 tionary for one day, and H. M. S. Fox which only made good a course 

 of N. 73° East 71' miles, still reached only to the meridian of the centre 



