PLATE XXV 1 



Mean Dnilv Curves for eaeh Month of 1826'. 



AM. 

























P.M. 















Trav us. 'Ray. Soo 



Edmburtjh Vol JUY page£56 



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Aug 





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Sep. 



June. 





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April 





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Dec 

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Nov 



































































































































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Jan,. 





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