Auguste Hippolyte Collard (1812-1893) Diversion of the Vanne, c. 1869-1870. Source. Armentières. After completion of research work in the mountain. Bime de Cérilly. La Bouillarde. Manhole. Yonne valley siphon. Bridge over the Yonne. Detail of the marine arch. Crossing the Loing valley. Large arch over the Loing canal. Siphon in the Loing valley near Moret. Crossing the Loing canal. Bièvre valley at Arcueil. Marie de Médicis Roman aqueduct. Arcades of the Yonne siphon. Eight (8) albumen prints. Sizes : from 30 x 41 to 32 x 43 cm Seven (7) of the prints correspond to illustrations in the book Dérivation des sources de la Vanne. Service municipal des travaux publics de Paris, Paris, École nationale des ponts et chaussées, 1869-1870. However, one of the prints (arcades of the Yonne siphon) is not reproduced.