Show find wisconsin peat bog dates from glacial age an investigation into the origin and development of an age old peat bog in wisconsin has been made by experts of the botanical department of the state university the conclusion reached was that the bog began as a lake in the period when glaciers swept over the state the botanists found 25 kinds of fossil pollens of which ten were significant in determining the history of the bog A layer of water mosses next to the clay in the deepest part of the bog lent support to the lake theory evidence that the development of the bog was not an uninterrupted process was found in the disclosure of layers of raw peat separated by layers or of oxidized peat or muck indicating striking climatic changes during |