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



slowly away to the S. W. or S. S. W., so as to keep her always on about 

 the same bearing from its centre. The Duncan, which ship had been 

 lying too from 6 p. m. of the 27th, was on this day at noon in Lat. 

 14° ll 7 ; Long. 78° 16 7 , her position being tolerably well ascertained, 

 lying too in a heavy gale with the wind at E. N. E., making the centre 

 to bear N. N. W. from her, a bearing which would place it nearly 40 

 miles to the Eastward of the Orient's position ; for that ship was now 

 lying too with a Northerly gale, and thus must have had the centre to 

 the Westward of her. It follows therefore that the Duncan's hurri- 

 cane and that of the Orient could not have been the same storm. The 

 Grand Dusquesne, which vessel was dismasted at 3 a. m., had the wind 

 at N. N. E., and the two ships were at this time 52 miles apart. These 

 winds and the positions of the ships would place the centre of their hur- 

 ricane in Lat. 13° 00 y S. ; Long. 77° 43 ; E., but I have marked it in 

 Lat. 13° 12'; Long. 77° 49 7 E., or 21 miles to the S. E. of this spot, 

 both to allow of striking the circle of the Orient's storm, and because 

 the exact position of the Grand Dusquesne, as shown precedingly is very 

 uncertain. The Orient was also probably farther to the Westward than 

 she appears on the chart, which would allow the two storms (for there 

 undoubtedly were two, since the Duncan's position is so carefuly given 

 and the Dusquesne passed so close to the centre but a few hours befoie) 

 more space for their development. Supposing them at a reasonable 

 distance, we can now understand very clearly by looking at the Orient's 

 track how it was she found " the weather growing worse every mile 

 she made to the Southward," when she attempted to bear up after 

 this time to midnight. 



The Maria Somes on this day, the 28th, was probably during the 

 whole of it close to the centre of her hurricane, which was " veering from 

 N. W. to North and back to West," which is an instance of what I 

 have advanced in another work, and in a former Memoir, the XIII. 

 Journal, Vol. — of the incurving of the winds.* And it must have been 

 of small extent, as it did not reach the Duncan, which ship, it will be 

 recollected, was on the Southern quadrant of her storm ; yet the two, if 



* For if we place in imagination a vessel on a storm card with the wind at West, any 

 incurving- must make it, in the Southern hemisphere, N. Westerly and gradually North- 

 erly, by which time she will he drifted (and the storm have moved down) so as to 

 bring it again to West if it is moving to the Southward as this was. 



