Abstract
The study of post-Pleistocene vegetations and migration of forests by means of fossil pollen in peat is a comparatively recent addition to the study of paleobotany and plant geography in America and is certainly in its pioneer stage in Indiana; yet that state offers a rich field to the botanist interested in the postglacial migration of vegetation. In the northern part of the state, numerous bogs in various stages of development, ranging from the open lake stage to those completely covered by meadow or forest, are readily accessible for study. In central Indiana, bogs are less numerous, but all the more interesting, because they mark the southernmost extension of glacial bogs in Indiana.
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