828 Eighteenth Memoir on the Law of Storms. [Aug. 



north-eastern coasts as far as Chittagong. These are followed by 

 those of the inward bound vessels from Madras and Europe, and 

 then by those of the ships which stood to sea from the Sand Heads, 

 The logs of the Pilot and Light vessels are included in the Tabular 

 statement. I have then in a Summary detailed the grounds on which 

 the places of the centre are laid down, and the rates of travelling, and 

 the Summary is followed by Remarks on the various phenomena which 

 this Cyclone has so well exhibited, and which are so essential to advance 

 our knowledge of their causes, and as warnings of these terrific meteors, 

 and upon Diagram No. IV. which affords by contrast a very remarkable 

 and important lesson. I have then given a brief review of the management 

 of each ship and a statistic summary of the whole, which will be found of 

 great interest. The concluding section is one of Practical deductions for 

 the management of inward and outward ships at or nearing the Sand 

 Heads, on the approach of a Cyclone, which I trust may be found useful 

 to the careful mariner who has the interests of his country or of his 

 owners at heart. I should not omit to state that this memoir was 

 ready in September, but the arrangements of the Journal would not 

 permit of its being then published. As however a Cyclone might have 

 occurred in October when the practical directions would have been 

 useful to the outward bound ships, I applied to the Secretary, Mr. 

 Laidlay, for the permission of the Council to publish that part in the 

 newspapers, which was most readily accorded. Numerous copies of it 

 were distributed, and Government was also supplied with them for the 

 use of the Pilot and other sea-going vessels in its service. 



Abridged Log of the Brig Teak (No. 2 on the Chart) Captain 

 McFARLANEj/rom Pinang to Calcutta, Civil Time. 



The Teak left Pinang on the 19th Sept. 1848, but only passed the 

 Sayer Islands on the 6th Oct. On the 8th Oct. in 11° 20' N. Long. 

 96.31 East, had moderate breezes S. E. and by midnight had a strong 

 gale and hard gusts at S. "W. 



On the 29th October, strong breezes S. S. W. to south, with squalls and 

 rain, 8 a. m. Simp. 29.94, Bar. 30.45. 



\0th Oct.— Wind from S. b. W. to S. S. W. and south, strong breeze, hard 

 squalls and rain, the squalls veering to S. W. very uncomfortable sea. Noon 

 Lat. 15o 13' n.j Long. 93° 48' East; a. m. Simp. 29.84. Midnight in 50 

 fathoms water. 



