Abstract
It has already been shown that the site at Decoy Pool Wood gives very good evidence of two flooding episodes, each demonstrated by vegetation of a eutrophic character, and each succeeded by drier conditions in which oligotrophic communities recovered the bog surface (part VIII). The pollen samples taken at intervals of only 1 in. (2*5 cm.) apart, yield a remarkable amount of information about the correlations of the two swamping horizons which they cross, and the alterations of climate, prehistoric agriculture and forest composition. It has already been shown that the pollen of local origin from plants growing on the bog surface reflects in detail the modification of the plant communities.