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Plate 17 





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A sketch of the serpentine dikes at Syracuse, copied without change from 

 a field notebook of the New York State Geological Survey, 1841, and drawn 

 by R. C. Taylor, an English geologist who accompanied the State geologists 

 during that field season. It will be observed that in this sketch two dikes 

 are represented, although at the present time but one is known. 



