Quart. Joiirn. Geol. Soc.VoIXXVn. Pl.^1. 



m Ki^iiL. 



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- 31 feet aioveTdgh-ivaier marJi, 



Bightvater level 

 -^Xaw water level 



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lie 



T Dan^erfield Itti. Bedfcrd S^' C'^vveul i^Tai-den 



