OTTAWA COUNTY. 231 



has this character at some points in the western part of the county, but 

 its typical exposure is in the the upper and central portions of the bluffs 

 about the south end of Put-in-Bay Island, and in the island of Gibraltar 

 which incloses Put-in Bay Harbor. 



2d Massive or even-bedded, coarse-grained, harsh, dirty buff lime- 

 stone, non-fossiliferous, magnesian and soft, very much like some parts 

 of the Lower Corniferous ; beds fifteen to thirty inches, sometimes with 

 curly bituminous films ; useful for general building, and for all walls and 

 abutments. This character of the Waterlime is believed to be confined, 

 in Ottawa county, to its lowest fifteen feet, although it probably occupies 

 less than that thickness. It has not been met with in actual outcrop 

 within the county, but it is in outcrop along the Portage, in Wood 

 county, in such proximity to the Niagara that its place in the formation 

 may be pretty nearly determined. It would probably be found within a 

 belt of three miles wide bordering on either side the Niagara anticlinals. 



3d. The Waterlime may appear as it does in the upper part of the 

 quarries of Messrs. Newman and Ford, and of Wyman and Gregg, at 

 Genoa. It is there in beds of about three inches — though they are very 

 often seen at other places less than an inch — and of a drab color. The 

 texture is close, and the grain is fine. The bedding is subject to sudden 

 changes of dip, showing such local flexures as to render it quite impossi- 

 ble to depend on the dip seen for a guide in searching for higher or 

 lower members. It has been seen to vary within the distance of ten 

 rods so much as to change a westerly dip of twenty degrees to an easterly 

 dip of the same amount. Its bedding is uniformly separated by bitumin- 

 ous films or colored sedimentation, which often give the surfaces of the 

 beds a blue cast when exposed to the weather, although the films them- 

 selves are at first nearly black. The surfaces of the beds are also usually 

 marked with a stylolitic or wavy contour. This condition of the Water- 

 lime is often fossiliferous. 



Phase No 1 is met with only in Ottawa, Wood, and some parts of San- 

 dusky counties. It wholly disappears from the formation in counties 

 further south. Phase No. 2, while it occupies the base, or a position 

 near the base, of the formation in Ottawa and Wood counties, also is met 

 with near the top, in close proximity to the Oriskany sandstone, in San- 

 dusky and Seneca counties. They seem to be gradually replaced by 

 phase No. 3, which, with a considerable addition of bituminous matter, 

 is the only form of the Waterlime seen in counties further south (Wyan- 

 dot and Allen). No. 1 is believed to change its place strati graphically 

 in the formation, or at least not to be confined to any definite limits. Its 

 position at Put-in-Bay Island, in the upper part of the Waterlime, cor- 



