PLATE XV 



Job Neck 

 Pond 



LongPr. 

 Herring PoniL 



FIG. 2. Coastal lakes formed by the blocking of the ends of drowned 

 valleys. Scale, about 1 mile per inch. Contour interval, 20 feet. 

 (Marthas Vineyard, Mass., Sheet, U. S. Geol. Surv.) 



