Clarke — Oneonta, Ithaca and Portage Gtroups. 



71 



The high hill on the south side of the Cheningo valley and which is crossed 

 in going to Solon, has an elevation of not less than 600 feet above the valley, 

 and the exposures near the top afford Spwifer mesastrialis. 



Station VIII. Solon, Cortland county. This village lies near the head 

 of a stream known as Trout brook which empties into the Tioughnioga eight 

 miles away. The only exposure found in the region is along this brook. The 

 rock section is about forty feet in thickness and consists at the base of com- 

 pact, soft sandy shales with abundant fossils, overlaid by more sandy beds 

 and flags, also fossiliferous. The uppermost layers are made up of heavy 

 sandstones containing concretionary masses of immense size, such as I 

 recorded in a previous report as occurring at Greene, above the green and red 

 Oneonta beds, and have noted elsewhere at Marathon and near Lisle in the 

 Tioughnioga valley. 



These upper beds are not fossiliferous, but the lower strata furnished 

 the following species: 



Cladochomis (cc). 



Spirifer mesastrialis, large and normal (cc). 



Ghonetes scitula, large form (c). 



Ortlds impressa, large and normal (c). 



Microdon beUistriatus, small variety (cc). 



liopteria Qre\ mii (c). 



At i' [i pa ret u ndaris. 



Leptostropli ia m ucronata. 



Trap idolept u s car in at// s. 



Paraci/clas lirata (c). 



Modiomorpha s u balata. 



Nucula carl) uUformis. 



A dim opter ia perstr ialis. 



A loose block in this stream furnished Leptcena rhomboidaliis, Spi/rifer 

 mesastrialis and Actinopteria prist rial is. 



Station IX. McGrawville. This village lies in the Trout brook valley, 

 four miles east of Cortland. The valley here is broad and though there are 

 streams entering it abundantly from the north, there is but one from the 

 south. Rock exposures are few on account of the overwhelming amount of 

 alluvial deposits. The lowest outcrop observed is in the village and along 

 its southeastern edge on a creek entering the valley from the town of Free- 

 town, where there is an exposure of thirty feet of compact sandy shale with 



