Image Description from historic lecture booklet: "The harbor at Buenos Aires was not satisfactory, and on account of this fact a great deal of dredging has been done to deepen the water. A very excellent system of stone docks extends for miles along the water front. The Plate River is a shallow estuary and not like a real river. the land sank and the sea water came into the mouth of the river, just as it did when Chesapeake Bay was made."
