1915.] NATURAL SCIENCES OF PHILADELPHIA. 569 



Section 1 represents a thickness of about 40 feet of strata. Section 6 has been 

 slightly reduced in order to bring it into the diagram. 



1. Composite section Criss Creek and shore of Cayuga Lake, Auburn quad- 

 rangle. 



2. About J mile from the western limit of the Skaneateles quadrangle. 



3. Cottle Hill, Skaneateles quadrangle. 



4. Composite section about 2| miles northeast of Skaneateles Village. 



5. About IJ miles southeast of Marcellus Village, Skaneateles quadrangle. 



6. Boundary between Skaneateles and Tully quadrangles. Mv. = Mottville 

 member (shales and hmestone); C.= Cardiff shale; M. = Marcellus shale; T. = 

 Marcellus-Cardiff transition; Ag. =Agoniatites limestone; On. = Onondaga lime- 

 stone. 



37 



