On Heron Pond.

The article discusses the ecological aspects and flora and fauna of swamps within the Heron Pond-Little Black Slough Nature Preserve in southern Illinois. These swamps are located a matter of miles northeast of the confluence of the Mississippi and Ohio Rivers and contain species such as bald cypresses, tupelo gums and prothonotary warblers. The swamps reside in a floodplain that was carved by the retreat of glaciers in the last glacial peak. A history of the region is presented, including ecological research and industrial development. The author recounts the experience of exploring Heron Pond in the 1960s.