﻿full. #m. fidi, TcL Jj, pi IS: f{o. 1§, ftl. J 



r> : — : «f — erc-i ; — <ri 



Eastern escarpment of the Helderbergs, Countryman 

 Hill section; showing deeply eroded cement bed about 10 

 feet below the base of the Coeymans 



