Prosser — Hamilton and Chemung Series. 



99 



10. Vitulma pustulosa, Hall. 



11. Ohonetes coronata (Con.), Hall (?).. 



12. Orihoceras con strict um, Van. 



13. Orihoceras subulaium, Hall. 



14. Orihoceras modi ion, Hall. 



15. Paracyclas Iwata (Con.), Hall. 



16. Grammysia bisulcata (Con.), Hall (?). 



17. Actinopteria decussata, Hall. 



18. Pterinea flabellum (Con.), Hall. 



19. Phacops /rout (Green), Hall. 



20. Homalonotus DeKayi (Green), Emm. 



21. Favosites Hamiltonice, Hall. 



22. Palceoneilo const ricta (Con.), Hall. 



23. NucvMtes oblongatus, Con. 



24. Tellinopsis subemarginata (Con.), Hall. 



25. Nueida Pandalli, Hall. 



26. Nyassa arguta, Hall (?). 



27. Nuculites triqueter, Con. 



28. Nucula bellistriata (Con.), Hall. 



Eleven miles southwest of North Brookfleld, and six miles south of 

 Hamilton, is Earlville, situated between the East and West Branches of the 

 Chenango river, and on the Madison-Chenango county line. The two branches 

 of the river are a mile apart, forming a broad valley with but few exposures 

 of bed rock in the vicinity of the village. About one-half mile northeast of 

 the village near the top of the low hill, is the White quarry, in which about 

 twenty feet of sandstones and arenaceous shales are exposed. The best 

 building stone, a bluish sandstone, is near the bottom of the quarry, and about 

 five feet above the bottom is a stratum composed almost entirely of shells, 

 largely Rhyrwhoriellas, which is called a "fire stone, 1 ' and higher is another 

 similar stratum. Spirifer granulosus (Con.), Hall, Tropidoleptvs carinatus 

 (Con.), Hall, and Rhynchonella are common in the quarry. 



The best exposures near Earlville are to be found, however, in the t ut 

 on the old Syracuse and Chenango Valley railroad (now called the Chenango 

 Branch of the West Shore railroad), a little over a mile above the Ontario 

 and Western railroad station at Earlville. The cut is twenty-five feet deep 

 in places, through dark blue, block) shales which, on weathering, crumble 

 to small pieces. The shales are also well exposed in the gorge of the 

 brook at the same place. These shales underlie the coarse shales and 



