In 2015, artist Patty Chang (1972) followed the South-to-North Water Diversion Project, the longest aqueduct in the world, which brings water from southern to northern China. While walking, she collected her urine in plastic bottles, drinking their contents before refilling them, in turn drawing a connection between the large-scale infrastructural attempt to control the flow of water and the uncontrollable flows of her own body. Once back in Boston, Chang began making a series of portable urinary devices from discarded plastic bottles, which were then hand-blown in New York by glass-blower Amy Lemaire. Designed by Sabo day, this indexical publication is the first book dedicated to depicting the series of sixty-four sculptures in its entirety. It was published on the occasion of Patty Chang’s exhibition at A Tale of A Tub, which ran from September 14–November 3, 2024.