

VERTICAL SECTION oxtthe PARALLEL of LATITUDE « degrees North 



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VvUnded as a contiremtion of MACLURES tfnrd Section from the seOcsTum to the summit of the JUUghenie,. 





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8„o„ 



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6.0OO 



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 l.coo 



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\ \ Level of Lake Erie ' \ >n„^=^==^ .. -^qtf 





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Level of ^ to» "^^ ^° "^T-^y* 













Z-ongTlujle We si from. ~Washin.g-ton . 







VERTICAL SECTION on the PARAJLJL.EIL. of lATITTTDE 35 degrees North 

 intended as a contimiotion of yiACLllRES fifth Section 







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8.000 



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0:000 





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4OO0 



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■1000 



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t- Cool S,ro~Z, > 



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" '«"" \ / Level of,,,. Ocea^ 



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21 ji> 13 1L 







LomritniLe "West from WasTungtoTL. 



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