378 STEVENSON 



near the schoolhouse on the west side, and especially in the long 

 exposure on the west side of the river below Davis's dam ; the 

 topmost shaly beds are best reached under the Upper Pentamerus 

 cliff on the Murphy farm, West mountain. 



The Scutella is available on the Brown property, at the upper 

 side of the " Gallows field " and on Stony run, all on the east 

 side ; at Murphy's and the schoolhouse hill on the west side. 



The Upper Pentamerus is well shown and easily worked on 

 the Brown property, and especially at the " Rocks " above 

 Davis's dam, on the east side ; while the exposure on the 

 schoolhouse hill on the west side is especially good, as the in- 

 dividual layers are exposed over a broad space. 



The Oriskany is best on the schoolhouse hill where large 

 weathered fragments occur along a line of more than a quarter 

 of a mile. But one needs heavy tools here, as the smaller frag- 

 ments have been utilized. 



The Schoharie grit can be found on the northwest side of 

 West mountain and in the fences on the east side along Stony 

 brook. The best localities for Corniferous are on West moun- 

 tain, schoolhouse hill and the limekilns. 



As a locality for study of simple stratigraphy, preliminary to 

 the study of more complicated structure such as that of Kings- 

 ton and Rondout, the Schoharie valley is unexcelled, and it is 

 to be commended to the attention of instructors in field geology. 



APPENDIX 

 Glacial Action in Schoharie Valley 



Archibald E. Stevenson 



The hills on each side of Schoharie valley rise about 500 feet 

 above the river. The slopes on the western side are very steep, 

 even those of the Delthyris and Caudi Galli being climbed with 

 some difficulty ; but the slopes on the eastern side, with the ex- 

 ception of the Pentamerus cliffs, are so gentle that they are cul- 

 tivated. 



