The surreal treehoppers « Why Evolution Is True
- Keller was trained as a kunstschmied, an â€˜art blacksmithâ€™. From 1930 until his early death he was employed by the Berlin Museum fÃ¼r Naturkunde (Museum of Natural History), painstakingly labouring over his recreations of insects and their larvae. Each took a year to complete. Keller worked first in plasticine, from which he cast a model in plaster. This plaster reference model he then recast in papier machÃ©. Some details he added, cast in wax, with wings and bristles in celluloid and galalith (an early plastic material used in jewellery). Finally he coloured the surfaces, sometimes with additional gilding. The levels of patience and manual control Keller exercised were incredible. His fly, for example, boasts 2,653 bristles.