Sediments from lakes and bogs have given valuable records which indicate succession of forests and climatic changes since glacial retreat at the close of Pleistocene times in the geographical area now known as Indiana. The closing chapter of this history has, however, not yet been written, for every pollen profile adds new discoveries of variations in forest composition which may be due to difference in geographical location or to microclimatic variations. Thus, we might consider each new bog record a contribution toward reconstruction of forests of the past which covered the soils of Indiana. There are, especially, many unanswered questions with respect to forest succession along the line of junction between Early and Late Wisconsin glaciation in Indiana. Into this picture we fit the study of the pollen records from Reed bog where today corn fields mark the culmination of great vegetational changes which ranged from coniferous to primarily broad leaved forests.