In March 2003, the National Academy of Sciences Arthur M. Sackler Colloquia presented the "Scientific Examination of Art: Modern Techniques in Conservation and Analysis" at the National Academy of Sciences Building in Washington, DC. Featuring senior investigators of specific methods and materials, the papers in this book examine the application of scientific methods to the study and conservation of art and cultural properties. The Arthur M. Sackler Colloquia of the National Academy of Sciences address scientific topics of broad and current interest, cutting across the boundaries of traditional disciplines and attracting up to 250 leading researchers in the field. These colloquia are made possible by a generous gift from Mrs. Jill Sackler, in memory of her husband, Arthur M. Sackler.