G92 A Sixth Memoir on the Law of Storms in India. [No. 127. 



the changes of the monsoons, compiled from the Canton Register, it 

 appears that in 1831 the change took place between the 1st and 14th 

 October, and in 1830, from the 5th to the 12th October. This valu- 

 able document comes down only I regret to say to 1835, and I have 

 not been able to find any source from which to continue it, or at least 

 to ascertain the setting in of the monsoon for this year. 



TRACKS No. XXVI and XXVII. 



The Thetis and Golconda's Tyfoons. 



In No. CXIX of the Journal of the Asiatic Society, I published 

 as my Fourth Memoir on the Law of Storms, accompanied by a chart, a 

 detailed investigation of these two storms, in one or both of which, 

 (for she might very possibly have been caught at their junction,) 

 the unfortunate Golconda, with the head-quarters of the 37th Madras 

 Native Infantry, and 300 troops on board, appears to have foundered. 



In this it is clearly shewn, from the logs of the Ships Thetis of 

 London and Thetis of Calcutta, which were almost in company with 

 the Golconda, that they fell in, about the Macclesfield Bank, with two 

 storms, one of which travelled from the S. 78° E. to the N. 78° W. 

 passing about 100 miles to the North of the Macclesfield, and the 

 other travelled from S. 10° E. to about the North 10° W.* Of the 

 three Ships, the one, the Thetis of London, to all appearance perfectly 

 aware of his position, with an excellent Simpiesometer and Barometer 

 on board, the first oscillating for twenty-four hours before the gale ! 

 hove to at the right time and place to avoid running across the track 

 of the storm, and received no injury. The second, the Thetis of 

 Calcutta, with less warning, having no Simpiesometer on board, and 

 being tempted by a fair S. West wind, ran on till she was in great 

 danger, and finally lost her mainmast, had three feet water in her 

 hold and was in great danger of foundering from her pumps being 

 crushed by the fall of the mast. 



The third, the unfortunate Golconda, which was but a short dis- 

 tance ahead, was in all probability lost by running into the centre of 

 one of the storms. 



I subjoin as an epitome of the evidence upon which this conclusion 



* This and the Lowther Castle's Storm p. 679, are the first Storms I have met 

 with, the track of which was so near the Meridian. 





