1849.] Seventeenth Memoir on the Law of Storms. 37 



proximation to the truth to put the seaman on his guard in full time. 

 And I have indeed introduced it, both as shewing the necessity of fre- 

 quent registry of the Barometer, and when possible, careful copying and 

 printing of the extracts. 



Track Q. 



H. M. Steamer Vulture's Tyfoon of October ■, 1847. 



I am indebted to Lt. Crawford Pasco, of H. M. Steamer Vulture, for 

 this notice, which is both valuable and remarkable. It is valuable as 

 shewing that on the Coast of Cochin China the Cyclones (in this instance 

 at least) travel direct to the shore, as in the case of the Coromandel 

 Coast, and it is remarkable as the only log we have of a Cyclone reach- 

 ing this shore, though no doubt they must frequently do so. I copy 

 Lt. Pasco's letter entire, and in the track laid down, I adopt that from 

 his diagram. There is nothing in the Cyclone itself calling for any 

 particular remark. 



H. M. Steamer "Vulture," Whampoa, Nov. 25th 3 1847. 



Sir, — In compliance with the request contained in your very valuable " Horn 

 Book' 7 of Storms, that you may be furnished with accounts of any storms which 

 occur, I beg to transmit a few particulars of a tyfoon, experienced by this 

 ship between noons of 23rd and 24th October last, while at anchor in Turon 

 Bay, Cochin China, Lat. 16° 07' N. ; and Long. 108° 13' E. of Gr., with a 

 diagram annexed illustrating the same. Consulting your book at the time, and 

 using the mean course and velocity of storms in October according thereto as 

 data, I concluded a N. E. gale or strong breeze would be felt at Hong Kong 

 about 6 p. m. of the 22nd, which on my return I found on enquiry to be the 

 case, though its strength had not been sufficient to excite particular attention. 



The following table of wind, &c. is copied from H. M. S. Vulture's log book. 



The figures denoting the force of the wind, and the letters the state of the 

 weather, are according to the abbreviations by Admiral Beaufort, now in general 

 use in H. M. naval service : — 



