The two tracts of woods comprising Dysart Woods are relatively undisturbed and contain white oak trees as large as 46 inches in diameter. A quantitative study was made of the North and South Woods to determine the similarities and differences among the species of trees four inches and greater in diameter at breast height. The statistical validity of Quercus alba as the dominant tree species in both tracts was considered. On the basis of importance values determined from the random pairs method, Fagus grandifolia in the North Woods and Acer saccharum in the South Woods are the dominant tree species. Quercus alba is represented only in size-classes above 10 inches dbh, whereas beech and maple are represented in all size classes up to 30 inches dbh suggesting that these species will continue to increase in importance relative to oak.