U. S. GEOLOGICAL SURVEY. 



LEVERETT. 



XXVII 



SHUTESBURY. 



PELHAM QUARTZITE. 



8oa_Lev^i^2 



AMHERST. 



PELHAM 



PELHAM QU 



AMHERST 

 XXX. 



PELHAM. 



AMHERST SCHIST 



Sea LeveL^^^Ss2^ 



CONWAY SCHIST. TONALITE. BECKET GNEISS. PELHAM 



QUARTZITE. 



LUDLOW. 



BECKET GNEISS. 

 ROWE SCHISl. 



CHESTER AMPHIBOLITE. 



AMHERST 



XXX I I . ^-«<SS8^t^^ CRANBV 



SUGARLOAF. 



HOLYOKE OIABASI 



a i 1 



SECTIONS ALONG 



