Michigan (ieoiogical and 

 Biological Survey. 



I'lildication 4 : IJinlogy 

 Plate III. 



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(Ai SAM) FLAT WKST OF LITTLi: OAK I'olXT. NOTE EMBIUOXIC DTNKS. 



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DUNE IS SUl'ERIMl'OSED. 



