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NEW YORK STATE MUSEUM 



In Herkimer county the " Coralline " is found in close prox- 

 imity to the Eurypterus beds, which represent the upper part of 

 the Salina. And it is singular that here, where the Salina has 

 a considerable thickness, the relations of these beds should not 

 have been at least suggested. 



Vanuxem, 1 referring to the division line between the Salina 

 and the Waterlime group in the eastern end of his district, repre- 

 sented by Oneida, Herkimer and Otsego counties, says : " There 

 a brownish impure limestone is seen, often mottled, containing 

 columnariae of a somewhat spherical form and about the size of 

 an inch or more ; also a few encrinital fragments, and a small 

 orthocera, the species not named. This is the mass which sepa- 

 rates the two groups, and forms the base of the Waterlime group." 



Again 2 in speaking of the upper member of the Salt group, 

 representing the Eurypterus-bearing bed of the Salina. he says : 

 "Above the upper deposit there are irregular, light colored layers 

 with globuliform columnaria and other fossils, which belong to 

 the Waterlime group, or to an intermediate one which we do not 

 attempt to establish." It may seem at first sight that Vanuxem 

 might have meant by the intermediate layer that portion which 

 we term Rondout, holding a position between the " Coralline " 

 below and the Manlius limestone above. It will be seen however 

 that the Waterlime group as defined by Vanuxem consisted, in this 

 part of the State, of three distinct divisions, included between the 

 Eurypterus-bearing beds of the Salina below and the Coeymans 

 limestone above. The divisions of the Waterlime group as given 

 by Vanuxem are as follows 3 : "The first or lowest portion con- 

 sists of irregular layers with globuliform columnaria; above 

 which there is a drab colored series, followed by the upper blue 

 or dark colored ones." 



The section as above given agrees essentially with the one at 

 Schoharie, the lowest member corresponding with the " Coral- 

 line." the drab colored series with the Rondout and the uppermost 

 blue or dark colored ones with the Manlius limestone. The only 

 fossil mentioned by name as coming from the lower part of the 



1 Geol. N. Y. 3d Dist. 1842. p. 1 1 1 . 

 3 Geol. N. Y. 3d Dist. 1842. p. 99. 

 3 Geol. N. Y. 3d Dist. 1842. p. 112. 



