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THE PHYSIOGRAPHY OF ST. MAKY S COUNTY 



the Wicomico sea. As the ocean advanced once more, the valleys of 

 the Patuxent and Potomac river systems were transformed into estuaries, 

 Chesapeake Bay took the place of the Susquehanna Eiver, and a narrow 



Fig. 2. — Diagram showing the approximate position of the shore-line of the 

 Wicomico sea. 



neck of land broken into numerous peninsulas, which now corresponds 

 to the higher parts of St. Mary's County, was the only portion of the 

 region above water. The appearance of the county at this time is 

 roughly represented in Pig. 2. 



