"Ecological succession is the process by which a given area changes slowly until it becomes a stable community. This film shows how a sand dune becomes a forest. The process begins as a lake deposits sand on its banks and a middle beach is formed. Pioneer grasses take root in the sand, and are followed by cottonwoods, pines, oaks, and finally the climax beech-maple forest. A climax community will reproduces itself indefinitely unless it is disturbed." - Summary from the Teaching Guide.

"Explains that succession is the process by which a given area changes slowly and continuously until it finally becomes a stable community. Shows one of the earliest and most thoroughly studies examples of this process, emphasizing the general principles involved and describing interesting details. Filmed at the southern end of Lake Michigan." - Summary from WorldCat.