1858.] Meteorological Observations on Parisnath Hill. 



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** In this and the fol- 

 lowing tables the place op- 

 posite the hour of 10 a. m. 

 on the 3rd is always occu- 

 pied by the reading obtain- 

 ed at 10 h. 10 m. This 

 hour had been observed on 

 the hill and was easily in- 

 terpolated for Calcutta. 



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 29.831 



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The most striking feature of the barometrical curves is their great 

 regularity. The shape of the curve of oue day is like that of the 

 next, and the transition from hour to hour is as gradual and imper- 

 ceptible, as if we had before us the means of a month or a year, 

 instead of having the observations of only a single day. 



The pressure is falling without interruption at both stations on 

 the 1st, 2nd aud 3rd April. The following are the mean pressures 

 on each day at Calcutta and on the 1st and 3rd on the hill. Those 

 at Calcutta were taken from the hourly observations of the Observa- 

 tory, those on the hill were derived by the combination of hours 



