26 Seventeenth Memoir on the Law of Storms. [Jan. 



ously affect life and property, and the safety and honour of our flag ; and that 

 I should ill return the assistance which I have received from the Honourable 

 The Court of Directors in furnishing me with documents for my researches, did 

 I pass over this most grave error in silence. 



H. PlDDINGTON. 



Calcutta, 7th Oct. 1846. 

 Extract from the Log of the Schooner Mischief, Capt. White, from 

 Hong Kong and Singapore, subsequently obtained. Civil Time. 



26th June.— Left Hong Kong, Noon, Lat. 21° 40' N. ; Long. 21° 40'. Bar. 

 29.42. 



27th June.— Lat. 19° 16'i N. : Long. 112° 5'f East; Bar, 29.40. Ther. 

 92°, Squalls from S, to S. E. and a heavy swell from the South ; 8 p. m, brisk 

 gale S. E. Noon strong S. E. gale, a very heavy Southerly swell ; unable to 

 carry sail for it. 



2%th June. — Lat. 17° 39' N. ; Long. 110° 16' East; S. East breezes abat- 

 ing and sail gradually made. 



It will be seen on the chart that the Mischief crossed the line of 

 the Cyclone's track about 36 hours previous to its arriving at her posi- 

 tion, but that she distinctly felt the swell which the Cyclone was driving 

 up before it. 



Track K. 



Tyfoon of the Ship Hyderee, Capt. Powell, 2\st and 22dJidg, 18 16. 



The Hyderee at sunset 21st of July, 1846, had the Grand Ladrone bearing 

 N. b. W. distant 15 miles, in 17 fs. water, standing to the E. S. E. with the wind 

 at N. E. increasing to a hard gale and very heavy high sea. Bar. 29.50; mid- 

 night 29.30. 



22nd July.— At 2 a. m. Bar. 29. 20 ; 4 a. m. 29.00 ; hard gale at east at 6 a. m. ; 

 daylight the wind fell light, Bar. 28.90, and some sail was made to keep the 

 vessel from rolling At 8 a. m. the wind was South but Bar. rising ; at 9 S. E. ; 

 by 10 a heavy tyfoon at S. E. ship on her beam ends ; cut away the mizenmast 

 and foretopmast, lost foremast head, cut away main topmast ; decks being swept 

 fore and aft ; at 11 moderating; 3 feet water in the hold; Noon moderate 

 but a heavy sea. The Barometer at sunset on the 21st July was 29.50; at 

 midnight 29.30; 2 a. m. 29,20; 4 a. m. 29.00; daylight 28.90; after which it 

 began to rise. The ship's position at sunset, when the gale commenced, was with 

 the Grand Ladrone bearing N. b. W. distant 75 miles, in 17 fs. water. After 

 this stood to the E. S. E. till the wind shifted at 10 a. m. and when the gale 

 was over, had soundings 22 fs, Cow-cock Island bearing north, about 40 miles to 



