Copyright Acknowledgments
Every reasonable effort has been made to trace the owners of copyright materials in this book. We are happy
to receive information leading to more complete acknowledgments in subsequent printings of the book, and
apologize for any omissions. We are grateful to the following for granting permission to reprint their materials:Document 79: 100,000,000 GUINEA PIGS by Arthur Kallet and F.J. Schlink. Copyright © 1933, 1960 by
Arthur Kallet and F.J. Schlink. Reprinted by permission of Vanguard Press, a division of Random House,
Inc.
Document 81: Arthur Tansley, “The Use and Abuse of Vegetational Concepts and Terms,” Ecology 16
(1935), courtesy of the Ecological Society of America.
Document 83: THE CULTURE OF CITIES by Lewis Mumford, Copyright 1938 by Harcourt Brace &
Company and renewed 1966 by Lewis Mumford. Reprinted by permission of the publisher and Martin
Secker & Warburg, Ltd.
Document 84: “Chapter 5,” from THE GRAPES OF WRATH by John Steinbeck. copyright 1939,
renewed © 1967 by John Steinbeck. Used by permission of Viking Penguin, a division of Penguin Group
(USA) Inc. Reprinted by permission of Penguin Random House.
Document 85: Marjory Stoneman Douglas, The Everglades: River of Grass (1947), courtesy of Univer-
sity of Miami, Archives and Special Collection Division, Otto G. Richter Library, Coral Gables, Florida.
Reprinted by permission.
Document 86: Roger Tony Peterson, Birds over America (New York: Dodd, Mead, 1948), pp. 71-73.
Reprinted by permission of Mrs. Virginia Peterson.
Document 87: OUR PLUNDERED PLANET by Fairfield Osborn. Copyright 1948 by Fairfield Osborn.
Reprinted by permission of Little, Brown and Company.