JOHN HAY, author of The Great Beach (winner of the John Burroughs Award), The Immortal Wilderness, The Run, and many other books on nature, is past president of Cape Cod Museum of Natural History and former Professor of Environmental Studies at Dartmouth College. CHRISTOPHER MERRILL holds the William H. Jenks Chair in Contemporary Letters at the College of the Holy Cross. He is author of 12 books of nonfiction and poetry.