56 Eleventh Memoir on the Law of Storms in India. [No. 157. 



formity with our law of storms for the Southern Hemisphere ; and to 



the Westward we have now moreover. 



| With wind from S. to S. W. and at 



The Baboo < noon S. W. b W. and at 6 p. m. 



( W. S. W. strong gale. 



J With strong gale and mountainous sea 



The Edmonstone < wind about S. S. W. veering to S.W. 



( after noon. 



which are also about the winds which ships entering the storm on its 

 western quadrant should have. The Sophia is yet too far to the West- 

 ward to feel much of the storm. Taking all these data we find that 

 the nearest spot which will reconcile them, within either a few miles 

 of their position as given or calculated, or within a point or more of the 

 direction of the wind,* is one in Lat. 7° 18' S. and 86° 45' E. where 

 I have therefore placed the approximate centre of the storm for this 

 day. 



On the 29th November. — The positions of the ships are now becoming, 

 it should be recollected, very uncertain from the continuance of the 

 bad weather, and thus any estimation of the true place of the centre of 

 the storm from their supposed places at noon, becomes more and more 

 difficult. Nevertheless if we take a point near the calculated place 



* I use here these words, intentionally, and as writing for unprofessional as well 

 as professional men, and anxious that not only all our data, but also all the consider- 

 ations which would influence the mind of a scientific seaman in considering what 

 weight he would give to these data, should be known to all. It occurs to me that 

 I may usefully set down here, what considerations must be taken into account in 

 considering log-book relations of storms. The seaman is acquainted with most of 

 them, but some may be new even to him. The data are first the ship's place, second 

 the direction of the wind, third the run or drift, fourth the sea, these are influenced 



1 Want of observations. 



2 Bad observations set down as good ones. 



3 Run or drift ill kept or badly estimated, few ships marking their lee-way for 

 instance, and some being much more lee-wardly than others. 



4 Storm wave, ISee 8th Memoir, Jour. As. Soc. Vol. XII. p. 397 for the ex- 



5 Storm current, J planation of these terms. 



6 Wind carefully or carelessly noted ? 



7 Not noted at all till a day or two after the storm 1 



8 Veering of the wind set down at the wrong hours. 



9 Alterations of courses also set down wrong, or at wrong time. 



10 Inaccuracy of all data from errors of copyists or printers ; the last almost con- 

 tinual in Newspaper accounts. 



