KENDALL COUNTY. 141 



beds, was taken on Waubansia creek, in the same place which has been already 

 noticed as a locality of the Niagara lower beds. Commencing at the base of 

 the Niagara limestone, about five feet below the top of the bank, the strata 

 were as follows : 



FEET. 



1. Gray, or bluish gray limestone, with chert, apparently destitute of fossil remains 3 



2- Gray limestone 7 



3. Soft bluish shale 1 



4. Gray limestone 2 



A little farther down the creek, the gray limestone, (No. 4), is better devel- 

 oped, and contains many fossils. The rock is a hard, sub-crystalline, thin bed- 

 ded limestone, with even, thin shaly layers, and is considerably quarried at this 

 point, as a material for the rougher kinds of masonry. The most abundant 

 fossils in this locality are, Tentaculites Oswegoensis, Rynchonella copax, Orthis 

 occidentaiis^ Orthis bellarutjosa, Strophomena alternata, S. deltoidea, Chsetetes 

 petropolitana, and various crinoidal remains. On the opposite side of the river 

 from the village, at the western extremity of the bridge, there is also an expo- 

 sure of about twelve feet in vertical thickness, of thin bedded, grayish lime- 

 stone, containing, at this point, considerable chert in lenticular and irregularly 

 flattened masses. It has been quarried here to some extent, and has afforded 

 some very fine crinoids. These same beds of grayish, cherty limestone, con- 

 tinued to be exposed in ledges near the water's edge, on both sides of the river, 

 for some little distance below the bridge, but are not quarried elsewhere. 



Below Otiwego, along the Fox, the beds of the Cincinnati group, with occa- 

 sional interruptions, continue to appear in the bank of the river. The expo- 

 sures are of shale, with thin beds of limestone more or less abundant, and in 

 many places, indeed, the limestone forms the greater part of the outcrop, the 

 shale only appearing as partings between the thin beds of stone. Tn a few 

 places, the exposures consist entirely of bluish shale, as, for instance, in the 

 bed of Morgan creek, in the southeast corner of section 27, township 37, range 

 7. The beds of limestone are rarely sufficiently heavy to afford a good mate- 

 rial for building, and are therefore worked in very few places. The thin plates 

 of limestone are often covered with the more abundant fossils of this formation, 

 as, Rhyncli. capax, Orthis occidentalis, Orth. testudinaria, LeptsK.ua sericca, 

 Strophomena alternata, Ch&tetes, etc. At Yorkville and Bristol, these thin 

 beds of limestone are exposed at the ordinary stage of water, along the bank of 

 the river, and contain the same fossils as the exposures above. 



At the inilldam, on Blackberry creek, in the village of Bristol, about ten 

 feet perpendicular of grayish, crystalline limestone, with some hard, bluish, 

 shaly rock, is exposed. About thirty rods above, on the southern bank, is a 

 small quarry, in which about four feet of the limestone is exposed. The beds 



