1842.] A Sixth Memoir on the Law of Storms in India. 



645 



that we may accord them full confidence,) that the total depression 



was as follows : — 







Ther. 



Bar. 





6th Sept.— Noon, 82 



29.60 



Wind westerly squalls & rain, 



1th Sept.— Noon, 84 



29.50 



Easterly, squally, unsettled, 

 latterly N. E. 



6 p. m. 83 



29.45 



N. E. & Northerly. 



Midnight, 82 



29.40 



N. Westerly heavy gusts. 



8th Sept.- -8 a. m. 82 



29.30 



Gale N. Westward. 



Noon, 80 



29.20 





6 p. m. 80 



29.15 





Midnight, 79 



29.15 





9th Sept — 8 a. m. 79 



29.20 





Noon, 80 



29.35 





8 p. m. 80 



29.60 





From this it appears, that from noon on the 6th, to 6 p. m. on the 7th, 

 when we have taken the gale to begin, the depression was 0.05 only 

 in 30 hours, though it had fallen 0.10 in the 24 hours between noon 

 of the 6th and 7th. We then find it from 6 p. m. of the 7th to 6 p. m. 

 of the 8th, or in 24 hours, falling 0.30. It is useful to notice these 

 variations, because they afford a valuable lesson to those who will 

 take the trouble to reflect on them. The Glatton's Barometer also 

 gave her, by a fall of 0.18, full notice of the passage of the storm. 

 I shall refer to these subjects more at length in a separate memoir. 



TRACK No. VIII— Tyfoon of 28th and 29th October 1819. 



Document from the East India House. 



By Capt. Probyn, H. C. S. Minerva. 



The H. C. Ship Warren Hastings on October 25th 1819, was in 

 latitude 18° 56' N., longitude 1 19° 6' E., when a fresh gale commenced 

 from N. E. 



26th October.— .Noon latitude 19° 42' N., longitude 118° 21' E., in- 

 creasing gale from N. and N. E. 



21th October.— hat. 19° 58' N., long. 118° 2' E. ; strong gale N. E. 



4 Q 



