G.P. Marsh wrote what William Cronon calls in his foreword, one of America's three most important environmental texts, Man and Nature (1864) (the other two were Silent Spring and Sand County Almanac). Man and Nature argued that deforestation led to the demise of civilization: that because the ancients cut down their trees, there was erosion, drought alternating with floods, and climate change, the latter because moist forests no longer evaporated water into the atmosphere to cause rain and cooler temperatures. Environmental disaster then led to economic and social disaster. Perkins seems to have predicted the future, but this time it will no longer be confined to this or that area. In addition to Man and Nature, Marsh was a linguist who spoke some 20 languages, as well as a congressman, lawyer, and diplomat who served as U.S. envoy to Turkey and Italy for 25 years. He also helped found and guide the Smithsonian Institution. Lowenthal, emeritus professor of geography, University College, London, published an earlier biography of Marsh in 1958. Annotation copyrighted by Book News, Inc., Portland, OR