Two sided accrodion fold book with 14 silver gelatin of sand patterns which were formed by sound vibrations. This book was makde in response to E.F. Chladni's 18th century work on sound wave theory.
8x8 inches closed, 8x32 inches open for display on its own open box.
One of an edition of two. One is in the collection of the Smithsonian Institute, Dibner Library of Science, Washington, D.C.