Today most of the former fields, except those such as Cades Cove that are purposely kept open, have returned to forest. But it is still easy to recognize these grown-over fields by the types of trees on them. Many bear a nearly solid stand of straight-stemmed yellow-poplars. Others are marked by a dense growth of pines. Dr. Randolph Shields, who grew up in Cades Cove and became chairman of the biology department at nearby Maryville College, has watched the plant succession on old fields in the Cove since about 1930. He has found there that pines usually are the first trees to spring up among the grasses, herbs, and blackberries and other shrubs that follow field abandonment. On moist ground, yellow-poplars usually come up under the pines, but sometimes hemlock and white pine form a second tree stage under the pioneering Virginia or pitch pines. Where yellow-poplars come in, they usually shade out the light-loving pines in about 40 years. Gradually the many species of the cove forest become established under the yellow-poplars, presaging the mixed stand of big trees that will complete the cycle initiated by clearing the land. On the drier slopes it may take about 100 years for the pines to be shaded out by the red maples, oaks, and hickories that eventually become dominant in such areas. As you might expect, animal life changes with the progression of plant succession. Meadowlarks, bobwhites, woodchucks, and cottontails are replaced by red-eyed vireos, wood thrushes, chipmunks, and white-footed mice as grassland and shrubs give way to forest. With age and woodpecker activity, tree cavities develop in the forest, providing homes for an additional complement of animals such as screech owls, flying squirrels, raccoons, bears, and opossums. Under the protection accorded by its designation as a national park several animals have made a dramatic comeback in the Smokies. Bears once again roam the entire mountain area. Turkeys are frequently seen in such places as Cades Cove, where openings break the mantle of forest. In recent years sporadic beaver activity has been noted in the park. Even cougars are occasionally reported, although their presence has not been conclusively established. But wolves, elk, and bison—animals that symbolize the Indian’s America—probably cannot be brought back. Nature again reigns supreme in the Smokies. We may never see here the numbers of wildlife that surprised the first explorers, but we can see remnants of the giant-treed forests that greeted them, and we can marvel at the undulating expanse of green, a beautiful suggestion of the vast hardwood forest that once cloaked eastern America. Mountain Lifeways [Illustration: Milas Messer dresses or curries a hide in the drying shed at his farm on Cove Creek.]