704 Thirteenth Memoir on the Law of Storms in India. [No. 166. 



frequently drawn attention,* for there can be no manner of doubt that 

 the " Charles Heddle" experienced a most extraordinary storm wave of 

 four miles per hour during the storm, and this for five days successively. 

 I refer to the summary and remarks for the details of this, and will only 

 now observe, that this paper is arranged, like the preceding ones ; giving 

 first all the data; then the deductions from which the track of the 

 storm, and other phcenomena are laid down ; and finally, such remarks 

 as may occur. Amongst these last not the least interesting to the 

 meteorologist as well as to the seaman will be the curious result shewn 

 by the analysis of the winds for the five days, shewing them to have 

 been mvolutes of a spiral curve ! 



Log of the Brig Charles Heddle, Captain Finck, from the Mauritius 

 bound to Muscat, Nautical time, from Captain Royer, Master Attendant, 

 Port Louis. 



In forwarding this very remarkable log to me, Captain Royer, as I 

 have elsewhere stated, observes that he thought it so singular, that he 

 had taken the trouble to copy it with his own hand. In reply to far- 

 ther enquiries from me, he states, that Captain Finck is an able and 

 highly respectable seaman, and that his vessel, the Charles Heddle, was 

 originally a slaver, and usually employed in the cattle trade between 

 Madagascar and Mauritius, which requires always the fastest sailers. 

 This accounts for her extraordinary success in scudding, which perhaps 

 few vessels could have persisted in so long without imminent risk. 



I have translated her log most carefully from the French, a language 

 with which I am perfectly familiar, and I print it at length, that the 

 whole document may be fully before the scientific public. 



* See 8th Memoir, Journal Asiatic Society, Vol. XII. 



