1849.] Seventeenth Memoir on the Law of Storms. 17 



\Qth Oct. — At 3 a. m. wind south, increasing to a strong gale with heavy- 

 squalls and rain. Noon, Lat. 17° 12' N. ; Long. 117° 58' east ; Current S. 

 39° ; E. 172';* p. m. wind S.b. E. moderating; fresh and fine weather at mid- 

 night, with the wind S. E. and E. S. E. on the 11th, when the Lat. is supposed 

 by Capt. Gribble to be about 18° 30' N. 



Extract from the Log of the American Steam Barque Edith. Civil Time* 



8th Oct. 1845.— 6 p. m. offPedra Branca. 



9th Oct.—l a. m. wind N. b. E., brisk gale. At 5 N. E. hard gale, laid too, 

 head N. N. W. ; p. m. N. E. 



10th Oct. — Wind N. E., strong gale ; 5 p. m. wind east; 9 p. m. moderate at 

 S. E. ; off the Ass's Ears. Minimun of Barometer 29° 65'. Drifted from 

 Pedra Branca to the Asses Ears (drift of 2| per hour.) 



H. M. S. Agincourt at Hong Kong. Civil Time. 



On 9th Oct. 1845. — Steady breeze (5) from the north and east with squalls. 



10th Oct. — Wind north to noon, when force (8). At 4.30 p. m. Bar. falling 

 to 29.76 ; struck lower yards and topmasts; wind N. b. E. At 6 wind E. b. N. 

 Bar. 29.79 ; 5| p. m. let go best bower and veered to 80 fs. on the small bower. 

 To midnight wind E. b. N. Bar. 29.79. 



llth Oct. — Barometer rising to 29.90 ; at noon 2 a. m. a very heavy squall with 

 rain, wind east (8) ; 10 a. m. wind S. E. b. E. (7) ; p. m. weather becoming fine. 

 Abridged Log of H. M. Brig Espiegle. 



9th October 1845. — 6.50 a. m. weighed and stood out of the Lema Channel ; 

 heavy sea from S. E. ; wind N. N. E. (9). Bar. 29.87 ; Ther. 82. Noon. The 

 Ninepin bearing West. Great Lema S. S.W. p.m. Increasing sea and Bar. 

 falling from 29. 85 at noon to 29.70 ; at midnight, making all preparations 

 f or bad weather. Wind N. E. b N. (10.) 



10th Oct. — Hove too throughout with head to the Eastward. Wind N. E. 

 (10 and 11.) At 10 a. m. taken aback in a shift of wind from S. S. W., but 

 wind flying back to Eastf again, Bar. falling from 29.71 at 3 p. m. to 29.66 

 at noon; Lat. D. R. 21° 46' N. ; Long. 114° 35' ; p. m. soundings 32 per fin. 

 mud. Wind E. S. E. (11) 4 p.m. East (10) to 9 p. m., when S. S. E. (11) Mid- 

 night 36 fm. mud and sand. 



* No doubt from the last observation on the 8th, this is 86' per day, or 3.3 miles 

 per hour ! 



T This temporary shift from S. S. W. we can only account for by considering it as 

 a local tornado within the main Cyclone, since the wind came back again steadily 

 to the east, and is evidently part of the other ship's storm. H. M. B. being hove 

 too on the wrong tack (for she was on the right hand side of the track, and should 

 have been on the starboard tack,) was also the cause of her being taken aback. With 

 her head to the Northward the S. S. W. shift would have been a quartering breeze. 



D 



