In 1993, Gabriel Orozco removed a lengthwise section of a Citroen DS and reconnected the two sides, making the car's fleet form look lighter yet. Orozco continues his experimentations with perceptions of gravity and weight in Photogravity, his latest installation at the Philadelphia Museum of Art. Here, photographs of pre-Columbian sculptures from the museum's Louise and Walter Arensberg Collection share gallery space with photographs of Orozco's own pieces. Homogenizing and juxtaposing photography and sculpture -- and endowing each with properties of the other -- Orozco creates unexpected visual relationships and invites dialogue between the two mediums. Published on the occasion of the exhibition in Philadelphia, this book presents the visually unexpected, creating a colorful combination of writings and collages from the artist's notebooks, his photographs and sculptures, and the Arensberg's pre-Columbian works.