In the 1920s and 1930s Arp developed a type of biomorphic sculpture that suggested a parallel between artistic creativity and creation in nature. The shapes in his work evoke worn pebbles, buds and other natural forms. He created these sculptures using a quasi-automatic process of sanding away at a plaster model until he was satisfied with the shape. ‘I work until enough of my life has flowed into its body’, he said. His efforts to link his work with nature included placing sculptures in the forest near his home at Meudon, where they could be discovered by unsuspecting passers-by.