52 Eleventh Memoir on the Law of Storms in India. \_ No. 157. 



first develope themselves, or are felt, at the extreme verge of their 

 peripheries or at their centres. 



We cannot therefore assign any centre for the storm on the 24th, for 

 we have no evidence beyond the heavy swell just alluded to that it 

 was fairly begun any where on that day ; though it should be borne 

 in mind that it may have been also coming up from a distance, and 

 that the incipient gale of the John Fleming was perhaps an extra-vor- 

 tical stream thrown off from the main body of the storm,* and the 

 heights of the Bars, of the John Fleming and Ugie as late as noon of the 

 25th lends some countenance to the probability that the storm had 

 formed and was really coming up. It is remarkable also that on this 

 day the Fleming had the weather " more moderate" than on the 24th, 

 while with the flowers of Ugie it was " a strong gale" at noon. 



On the 25th November. — At noon it will be seen that these four 

 ships the Fleming, Ugie, Ainslie, and Futtle Rozack, were all within a 

 square space of 45 miles on each side, or as before, allowing for slight 

 errors, all within a square degree, having made from 16 to 85 miles to 

 the S. E. by Eastward. The Fleming was the northernmost ship, and 

 in about 6° S., the other three nearly on the same parallel of 5 40. S. 

 and from 85° to 85° 40' East. The Fleming as above remarked has the 

 weather moderating considerably on this day, and this is a proof that 

 her gale of the 24th, was as we supposed, in all probability, an extra- 

 vortical stream thrown off from the gale into which the other three 

 ships 40 miles to the South of her, were now fairly entered.t They 

 had all four on this day the high Southerly sea, which may be said for 

 the Ugie, Fleming, and Ainslie, to have begun from midnight, 24th 

 25th, when the Ugie marks 2 points of lee- way and she begins her pre- 

 parations for bad weather also from this time. Excluding the Fleming 

 since she was not yet fairly in the storm and taking the three other 

 ships just mentioned to have been within it, we find they had all the 



* The vignette titles to the Charts are purposely drawn to shew these kinds 

 of irregularities either at the circumference or in the bodies of the storms. If con- 

 sidered attentively the reader will see that the arrows may curve more inwards 

 or outwards, or be in the exact circumference of every circle, from a hundred varying 

 causes and forces. 



t Here we have an explanation of this treacherous moderating of the weather 

 which I have often remarked upon, see " Horn Book of Storms," p. 11, and which 

 every seaman of experience in tropical seas knows. 



