TECHNOLOGY AND CULTURE Book Reviews 183 Swartz, the nutritionist; Henry A. Wallace, the developer of hybrid corn; Norman Borlaug, who fathered the Green Revolution; and James Watson and Francis Crick, whose discoveries made genetic engineering a new, revolutionary tool in increasing agricultural production. Food economist Theodore W. Schultz and soil conserva tionist Hugh Hammond Bennett are also included. Food aid (the term the author uses for distribution) leaders range from Joseph Smith, founder of the Church of Jesus Christ of Latter-Day Saints, to Madame Wang Shun Ying, official of a Chinese commune, and include political leaders Herbert Hoover and Hubert Humphrey. Food aid, essential in preventing famines when natural disaster strikes, is now, with the tremendous productivity of agricul ture, more possible than ever before in history. Finally, Paarlberg devotes a section to leaders of family planning in the United States, India, China, and Taiwan. He points out that medical advances permit many more children to survive; at the same time, the overall death rate has been sharply reduced. In 1950, the death rate in Third World countries averaged twenty-six per thou sand; by 1982 it was about eleven. As the author poses the problem: “If we interfere massively in the processes associated with death we are compelled to interfere also in matters related to birth” (p. 22). But the effort to control population growth has not succeeded to the same extent as the efforts to increase agricultural production and produc tivity. The technology for family planning is available; the difficulty is in persuading people to use it. An underlying theme of technology and the application of technol ogy runs through the volume. Much of the work is based on Paarlberg’s involvement with the people he discusses as he carried out his own work in ending hunger. However, he lists references for additional reading about each of his famine fighters. This interesting and well-written book, although not definitive in any sense of the word, shows how individual efforts can influence tfie world food supply. It is a good introduction to the history of hunger in the world. Wayne D. Rasmussen Dr. Rasmussen, retired as historian of the Department of Agriculture, is secretarytreasurer of the Agricultural History Society. He recently published a volume on the Cooperative Extension Service and is at work on histories of the Agricultural Cooper ative Service and the Beltsville Agricultural Research Center. Geography, Technology, and War: Studies in the Maritime History of the Mediterranean, 649—1571. By John H. Pryor. New York: Cambridge University Press, 1988. Pp. xviii + 238; figures, notes, bibliography, index. $39.50. John Pryor, senior lecturer in history at the University of Sydney and author of two (among others) important technologically oriented 184 Book Reviews TECHNOLOGY AND CULTURE articles in The Mariner’s Mirror (1982, 1984) dealing with the construc tion of Crusader ships, takes the whole of the medieval Mediterra nean as the subject of the study under review here. Pryor is enabled to treat such a vast topic in less than 250 pages of text and notes by his controlling assumptions. He argues with considerable persuasiveness both on a general level and in several case studies that the physical realities of the sea, weather, and ship technology in effect created traffic or trunk lanes, and those polities that controlled crucial islands such as the Balearics, Sicily, and Crete (I am oversimplifying here) had success within their grasp. I would quibble here and suggest that such polities had the opportunity for success. The first three chapters—The Sea, The Ships, and Navigation—are the most important and will likely be of the greatest interest to most medievalists and especially to the readers of Technology and Culture. The case studies dealing with Islam, Byzantium, and the West in the 9th and 10th centuries, the Crusader states in the 12th and 13th centuries, maritime traffic, the Turks, and a very short epilogue on the Barbary corsairs are all highly problematical, as Pryor recognizes. It is to his credit that he takes stands on controversial matters that are usually both reasonable and well researched, even if not based largely on his own archival work or original Greek and Arabic sources to which...