Indian Runner duck the Pekin duck. As soon as the Indian Runners became fashionable, a demand for egg-layers and general purpose breeds developed. Using Runners crossed to Rouens, Aylesburys and Cayugas (the large black American breed), William Cook produced his famous Orpington Ducks. Mrs Campbell crossed her fawn-and-white Runner duck to a Rouen drake to create the Campbell ducks introduced in 1898. Later, she introduced wild mallard blood and managed to create the most prolific egg-layer, the Khaki Campbell (announced in 1901). Other breeds followed, some of which emerged as direct mutations of the Khaki Campbell, along with crosses back to Indian Runners,
Rouen in the since destroyed "tour de lady Pucelle"); the "Church of Saint Ouen" (12th–15th century); the "Palais de Justice", which was once the seat of the "Parlement" (French court of law) of Normandy; the Gothic "Church of St Maclou" (15th century); and the Museum of Fine Arts and Ceramics which contains a splendid collection of faïence and porcelain for which Rouen was renowned during the 16th to 18th centuries. Rouen is also noted for its surviving half-timbered buildings. There are many museums in Rouen: the Musée des Beaux-Arts de Rouen, an art museum with pictures of well-known painters such as