U. S. GEOLOGICAL SURVEY. 



SOUTHAMPTON. 



Sea L evels 



mmm 



WESTFIELD. 



SUQARLOAF ARKOSE. 



WEST SPRINGFIELD. 





CRYSTALLINE SCHISTS. 



WESTFIELD. 



WEST SPRING! 



CRYSTALLINE SCHISTS. 



SUFFIELD, CONN. 



BUCK HILI 



SECTIONS ALONG 



