Kepomt ok the State Geologist. 



In tlie large ravine, six miles east of Grimes valley, near the Big Elm, ill 

 the town of Italy, Yates county, loose fragments of a layer of the same 

 character were found from approximately the same horizon. 



According to the measurements made, this layer is 599 feet higher in the 

 strata than the base of the Portage group, as previously assumed. The fauna 

 interned m it in tin- lowest of a dintinctivily bra.chi:>podous character that 

 has Keen discovered in this vicinity, and no recurrence of a fauna of Portage 

 characteristics has been observ ed above it. The sandstone layer at the brink 

 of the falls is one foot and four inches thick, compact and of a light blue color. 

 Above it there are exposed in this ravine forty feet of sandstones of the same 

 character, except that a few of the layers are schistose. They are from a few 

 inches to two feet and six inches thick, and are separated by thin layers of 

 very hard blue shales. These are the Portage sandstones. A solitary speci- 

 men of a large Ati-i/pa n ticiihi rix is the only fossil yet observed at this horizon. 

 Above the sandstones, ten feet of soft, dark bituminous shales complete the 

 ( ii iines gully section. 



On the opposite side of the valley on the steep slope of Hatch hill, the 

 sandstones form a w ell defined and prominent terrace that shows the southern 

 dip of the strata \ en plainly . 



In Caulkins' gully and the quarry on the south bank, the sandstones are 

 very compact and thicker, and the proportion of shale much less. 



In the Tanner) gull) and Kaltenbach's quarry, the section differs but 

 slightly from that in the Grimes gully, though some of the sandstones are more 

 inclined to a schistose condition. Their character is the same at the exposure 

 near the water works' Reservoir. 



In the ravines at the head of Italy hollow, eastward in Yates county, the 

 sandstones are well exposed, generally in thinner beds, and with an increasing 

 tendency to lie schistose. 



For nearly fifty feet above the sandstones, the section in the Naples valley 

 is composed principally of dark and black shales, in which the most diligent 

 search lias failed to discover any fossils, and the few interstratified sandstones 

 are likewise barren. 



Above this, the sandstones again predominate and are somew hat lighter 

 colored. The lowest fossiliferous layer observed above that at the third falls 

 ill the Grimes gully, is on the road leading easterly across Devo Basin, two 

 mile- south of the village of Naples, a little south of the schoolhouse on the 

 road from Naples to [ngleside. This layer is exposed by the roadside near 

 ile f.».t of the hill, five or six rods from the [ngleside road. It is an isolated 



