1840.] Jhe Theory of the Law of Storms in India. 119 



At Calcutta. 



The following observations on the Gale, as it occurred at 

 Calcutta, are my own, taken in a rather confined situation in 

 Park Street, Chowringhee. The barometrical observations are 

 my own and those of the Surveyor- General' s Office, my baro- 

 meter being corrected to the standard one. 



Sept. 19th. — 4 p.m. Bar. 29.48. The day mostly calm, hot, 

 and cloudy ; towards evening heavy dark cumuli and nimbi to the 

 eastward, with lightning at times. 9 p.m. Bar. 29.47, wind 

 ENE. dark gloomy weather; drizzling rain, and low moaning 

 breeze throughout the night, with squalls and rain at times. 



September 20th.— 6 a. m. Wind NE. Bar. 29.44. Dirty 

 drizzling weather, with a sighing undulating wind. 10 a.m. 

 Wind NNE. Bar. 29.45 ; heavy rain and strong squalls at 

 times. Noon, NNE. to NE. Bar. 29.37- Strong squalls and 

 rain, heavy scud flying from the NE. 2 p.m. NNE. Bar. 

 29.33. Squalls, but almost calm at intervals, with heavy gusts, 

 and rain. 5 p.m. Wind north. Bar. 29.33. Strong gale and heavy 

 rain. 6 p.m. NNW. Heavy squalls and rapid scud from NW. 

 7 p.m. Calm! Bar. 29.34. At 9, wind NNW. Bar. 29.37 p.m. 

 Strong squalls and rain. Midnight, NW. with heavy gusts and 

 rain. 



September 21st. — 5 a.m. SW. Bar. 29.43. Squalls and rain. 

 9 a.m. SW. Bar. 29.49. Clearing up. 11 a.m. Calm. At noon 

 the gale terminated. Bar. 29.50, drizzling rain and squally 

 from W. and SW. 



Throughout this Gale the clouds were always, so to speak, 

 before-hand with the wind below them. When the wind was 

 at NE. the clouds were moving from NNE., and by the time 

 the wind arrived at North, or very little to the west of it, 

 the scud was flying from NNW. or NW., and again from 

 West, or nearly, so while the wind was yet at NW. shewing 

 that the centre of the vortex above (if it was a vortex) was 

 further advanced than its position on the earth. 



