ON THE BAROMETER, 



411 



this subject, by an article in the Annals of Phi- 

 losophy, vol. i. p. 408, drawn out by Professor 

 PiCTET of Geneva, who furnishes the curves for 

 one year at three places, viz. London, Paris, and 

 Geneva. Being somewhat surprised at the gene- 

 ral coincidence of those curves, I set to work to 

 collect and reduce some series of observations 

 which I had by me, in order to stir up inquiry, 

 as it certainly appears very probable, that the 

 pressure is almost simultaneous from the North 

 Pole to the Equator : And I feel extremely 

 anxious to ascertain, whether the same harmony 

 obtains from the South Pole, and ^vhether it 

 shall correspond with those of our side of the 

 line. 



The only way in which this can be established, 

 is by accurate observations kept at St Helena, the 

 Cape of Good Hope, and Botany Bay. We should, 

 by these, be able to see if there were any, or how 

 much difference ; which would tend very greatly 

 to elucidate this most curious and interesting sub- 

 ject. 



If this should attract the attention of any per- 

 son engaged in meteorological pursuits in the 

 southern hemisphere, who would take the trouble 

 to send home the results of their observations for 

 any year, directed to me at Edinburgh, I would 



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