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Sect. X.] 



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23 ) 



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Section X. 



ON ATMOSPHEE 





WAVES AND 



BAEOMETKIC CUEYE 



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By WILLIAM RADCLIFF BIET, Esq. 



In sketching out a system of barometric observation 



having especial reference to the acquisition of data from 



which the barometric character of certain large are 





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the sm^face of the globe may bo determined — inasmuch 

 as such areas are distina:uished from each other, on the 



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one hand by consisting of extensive spaces of the oceanic 



surface unbroken, or scarcely broken, by land; on the 

 other by the proximity of such oceanic surface to large 

 masses of land, and these masses presenting two essentially 

 different features, the one consisting of land particularly 

 characterized as continental, the other as insular, regard 



lias been accordingly had to such distribution of land and 

 water. 



As these instructions are intended for officers in Her 

 Majesty's and the mercantile service, observations on kuul 

 have not been alluded to ; but in order that the data 

 accumulated may possess that value which is essential for 

 carrying on the inquiry in reference to atmospheric waves 

 and barometric curves with success, provision is made to 

 mark out more distinctly the barometric effects of the 

 junction of large masses of land and water. It is well 



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