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CHANGES OF BAROMETRIC PRESSURE 



would most probably occur if the wind were to blow steadily for two 

 hours from each of the thirty-two points of the compass. 

 The results are given in the annexed Table. 



Table shewing the changes in Barometric Pressure, Pressure of Dry Air 

 and Pressure of Vapour, which talce place in two hours, during winds 

 from each of the Thirty-two points of the Compass. 



By examining the table it will be seen that on the average of the 

 year the barometer rises with a wind from any point between SWb W 



