DESCRIPTION OF SECTIONS 



45 



I ,~-i- — s_i 



Fig. 13 — Map showing the position of the localities examined in the Merrimac 

 Valley. Scale 1:160,000. 



Outlines of late glacial lake (area left white) and base after C. H. Hitchcock (1878) . 

 The course of the river has been considerably changed since 1878. 



