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ix I am very grateful for the help and encouragement I’ve received from friends and colleagues, especially Lynne Parenti (Washington, D.C.), John Grehan (Buffalo), Isolda Luna-Vega and Juan Morrone (Mexico City), Jürg de Marmels (Maracay), Mauro Cavalcanti (Rio de Janeiro), Guilherme Ribeiro (São Paulo), Jorge Crisci (Buenos Aires), Andres Moreira-Muñoz (Santiago), Pierre Jolivet (Paris), Alan Myers (Cork), Robin Bruce and David Mabberley (London), Gareth Nelson and Pauline Ladiges (Melbourne), Malte Ebach (Sydney), Rhys Gardner (Auckland), Frank Climo and Karin Mahlfeld (Wellington), Bastow Wilson and Robin Craw (Dunedin), and Brian Patrick (Alexandra). Acknowledgments Heads_6480007_FM.indd ix Heads_6480007_FM.indd ix 10/20/11 2:39 PM 10/20/11 2:39 PM Heads_6480007_FM.indd x Heads_6480007_FM.indd x 10/20/11 2:39 PM 10/20/11 2:39 PM ...

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