1855,] A Twenty-fourth Memoir on the Law of Storms. 459 



on its S. Western quadrant which ship, up to noon this day, had evident- 

 ly sheered round the Western and Southern quadrants of the in-shore 

 and smaller Cyclone as will be seen by the rapid veering of the wind 

 with her. And the proximity of it to the large one fully accounts for 

 the oscillation of the Adelaide s Barometer so well and so carefully ob- 

 served by Capt. Stephens. We have also to take into account here that 

 the S. W. monsoon which was blowing strongly along the coast was adding 

 its force to this quadrant of the Cyclone. The distance, and the bear- 

 ing of the centre of the main Cyclone, would give the Adelaide at most 

 a moderate gale at JN". W. or one of no greater strength than the strong 

 squalls and puffs experienced at Calcutta at the same distance North of 

 the centre at this time, whereas we find her with a hard gale at W. S. W. 

 reducing her to storm trysails and evidently a part of the in-shore 

 Cyclone as marked. 



On the \hth May. We find the centre of the main Cyclone reaching 

 Bagundee at 2h. 15' a. m. on this day, and passing over the Station House 

 with about two minutes' lull ; so that we may say that the true centre 

 was at Bagundee at about 2h. 20'. a. m. an interval of (14h. 20') fourteen 

 hours twenty minutes, since Noon of the 14th ; which at eight miles an 

 hour would give about 115 miles. The distance measured on the Chart 

 is about 120 miles, and this position and rate of travelling will also be 

 found to agree, almost exactly, with the winds experienced by the Floating 

 Light at the Gasper Station and by the Grappler Buoy Vessel at Saugor. 



But in advancing inland to the N. b. East from Bagundee the Cyclone 

 seems to have increased its rate of travelling, though in some degree to 

 have moderated its fury ; for, passing over the Katgorrah report which 

 being only at thirty-eight miles distance and the exact time of the pas- 

 sage of the centre not being ascertainable from the brief notice which we 

 have from that factory, we have fortunately from Mr. Payter at Jeypoor 

 to the JN". N. W. of Bogoraa very clear and sufficiently exact data to 

 enable us to say that the centre passed there about 3 p. m. of the 15th, 

 which would give 12 hours and 40 minutes for the elapsed time, since its 

 passage over Bagundee at 2h. 20' a. m., the measured distance between 

 these two positions being 148 miles ; which will give 11.7. or eleven miles 

 and three quarters per hour as its inland rate of travelling, while as we 

 have seen it was only eight miles when at sea. It is thus an instance, and 

 I think a solitary one, of a Cyclone augmenting its rate of travelling 

 when it reaches the land. Was this owing to the junction of the smaller 

 in-shore Cyclone of the Limehouse and Amazon ? 



We have no data which will enable us to follow the centre accurately 



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