Pkossei; — Hamilton" and Chemung Series. 



XXII I>\ Iii the Morehouse brook at the lower end of its gorge, 

 between 125 and 150 feet above the level of Schenevus creek, are arenaceous 

 blocky shales containing an abundant Hamilton fauna. Higher in the gorge 

 are thin, even, sandy shales that closely resemble the Sherburne shales. The 

 lower part of the glen is clearly Hamilton, as may be seen from its fauna : 



1. Spirifer mucronatus (Con.), Bill. (a) 



2. flpirifer granulosus (Con.), Hall and Clarke. (<•) 

 Tropidoleptus carmatus (Con.), Hall. (c) 



4. Orthoihetes Chemungensis (Con.), H. and C, var. wrctostriatu. (rr) 



5. At/rypa reticularis (Linne), Dal. (it) 

 <>. Athyris spvriferoides (Eaton), Hall. (rr) 



7. P 'alceoneilo muta, Hall. (rr) 



8. Modiomorpha mytiloides (Con.), Hall. (it) 



9. AmbocoMa umbonata (Con.), Hall. (rr) 

 10. T&rebratula (J&imelld) LmcMaeni, Hall. (rr) 



