1850.] Nineteenth Memoir on the Law of Storms. 377 



falling from 29.74 at Noon to 29.54 at 4 p. m. The next ships to 

 her are : — 



The Samarang 200 miles to the W. S. W. with the wind about 

 E. N. E. The Suit any about 130 miles to the W. b. S. and the 

 Lady Sale about 115 miles to the W \ S. with the wind about E. N. E. 

 and these vessels had all by noon gales, or every indication of bad 

 weather. The note of the Deborah affords us no information as to 

 the weather on the 22nd, and the Pemberton's has no position. As 

 however, both these vessels were from Bombay we may take them, 

 like the Jumna, to have been running down to the S. b. W. or S. S. W. 

 at most, to get the trade wind as soon as they could. The bearings of 

 the centre from the ships Samarang, Sultany and Lady Sale will not 

 cross so as to meet at any point near enough to assume it as a centre, 

 and if the centre was at all distant the circle would include H. M. S. 

 Jumna and the H. C. P. V. Salween. And we know of the first that she 

 "had the usual fair (westerly) winds with heavy squalls thunder and 

 lightning" till the 23rd of April, and of the Salween at 170 miles to 

 the N. N. W. of the Braemar, that though, as with all the ships, she 

 had very threatening appearances, yet it was fine enough to allow her 

 to speak the Jumna. 



Hence we may suppose that, if the Cyclone was formed at Noon of 

 this day, it was only so overhead* and was settling down : perhaps 

 unequally ; i. e. with its S. Eastern and Southern quadrants more 

 inclined to the earth than the Northern and North Western ones ; or 

 that the Westerly Monsoon was still strong enough to the Northward 

 to force its way beneath and impede the due surface action of that side 

 of it. I do not mean as regards the wind, but as regards its electric 

 action. The mere winds only would have assisted each other, both 

 being from the Westward. We cannot thus fairly assign any centre 

 to this Cyclone for the 22nd. 



We find that the Futtle Rozack, which ship on the 21st had every 

 indication of a Cyclone to the Northward and Eastward of her, ran on 

 to the S. W. with the S. Easterly gales of its S. West quadrant till her 

 Barometer fell to 29.48 ; and at 10 a. m. bore up to the N. W. to get 

 out of it, bringing the wind to S. S. E. at 5 p. m. and to S. ^ East 

 and S. east at midnight, so that we may suppose, with so accurate an 

 observer as Captain Rundle, and the full detail of his careful obser- 



