"The longueil and the traversier, these are the names of the two cables that, wound on four winches called the papillonnage, tied our dredger, right and left, to the shores of Garonne. For seen from a plane, the four steel cables, the first two of which, in front, opposed the current while the two at the stern stabilized the pontoon, must have formed the edges of a transparent butterfly covering the width of the river with its spread wings." pp.11-12.
Serres, M. (2012). Biogea. Minneapolis: Univocal Publications.